diff --git a/.travis.yml b/.travis.yml
index d879ff8..22dc60e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,8 @@ before_install:
  - sudo make install
  - sudo /sbin/ldconfig
  - cd ..
+before_script:
+ - (cd node_modules/mosca/node_modules && rm -rf ascoltatori && ln -s ../../.. ascoltatori)
 language: node_js
 node_js:
   - 0.8
diff --git a/lib/amqp_ascoltatore.js b/lib/amqp_ascoltatore.js
index ad61170..1ddb017 100644
--- a/lib/amqp_ascoltatore.js
+++ b/lib/amqp_ascoltatore.js
@@ -96,7 +96,7 @@ AMQPAscoltatore.prototype._startConn = function() {
         }, function(message, headers, deliveryInfo) {
           that._queue.shift();
 
-          var topic = deliveryInfo.routingKey.replace(".", "/");
+          var topic = deliveryInfo.routingKey.replace(/\./g, "/");
           debug("new message received from queue on topic " + topic);
 
           that._ascoltatore.publish(topic, message.data.toString());
@@ -134,7 +134,7 @@ AMQPAscoltatore.prototype.subscribe = function subscribe(topic, callback, done)
       }, 5);
     });
 
-    this._queue.bind(this._exchange, topic.replace("/", ".").replace("*", "#"));
+    this._queue.bind(this._exchange, topic.replace(/\//g, ".").replace(/\*/g, "#").replace(/\+/g, '*'));
   } else {
     util.defer(done);
   }
@@ -149,7 +149,7 @@ AMQPAscoltatore.prototype.publish = function publish(topic, message, done) {
 
   debug("new message published to " + topic);
 
-  this._exchange.publish(topic.replace("/", "."), String(message));
+  this._exchange.publish(topic.replace(/\//g, "."), String(message));
   util.defer(done);
 };
 
@@ -164,7 +164,7 @@ AMQPAscoltatore.prototype.unsubscribe = function unsubscribe(topic, callback, do
       debug("queue unbound to topic " + topic);
       util.defer(done);
     });
-    this._queue.unbind(this._exchange, topic.replace("/", ".").replace("*", "#"));
+    this._queue.unbind(this._exchange, topic.replace(/\//g, ".").replace(/\*/g, "#").replace(/\+/g, '*'));
   } else {
     util.defer(done);
   }
diff --git a/lib/ascoltatori.js b/lib/ascoltatori.js
index 4611617..26f1259 100644
--- a/lib/ascoltatori.js
+++ b/lib/ascoltatori.js
@@ -66,7 +66,7 @@ module.exports.build = function build(opts, done) {
     result = null;
 
   Klass = (typeof opts.type === 'function') ? opts.type :
-            (classes[opts.type] || module.exports.MemoryAscoltatore);
+            (classes[opts.type] || module.exports.TrieAscoltatore);
 
   result = new Klass(opts, module.exports);
 
@@ -112,11 +112,11 @@ module.exports.use = function use(ascoltatore) {
 };
 
 /**
- * The default global Ascoltatore is a MemoryAscoltatore.
+ * The default global Ascoltatore is a TrieAscoltatore.
  *
  * @api public
  */
-module.exports.use(new module.exports.MemoryAscoltatore());
+module.exports.use(new module.exports.TrieAscoltatore());
 
 /**
  * These are just utilities
diff --git a/lib/behave_like_an_ascoltatore.js b/lib/behave_like_an_ascoltatore.js
index 52987d1..9ea75d7 100644
--- a/lib/behave_like_an_ascoltatore.js
+++ b/lib/behave_like_an_ascoltatore.js
@@ -71,13 +71,91 @@ module.exports = function() {
     this.instance.pub("hello", "world", done);
   });
 
-  it("should support wildcards", function(done) {
+  it("should support multi-level wildcard at start of topic", function(done) {
+    var that = this;
+    that.instance.sub("*/hello", wrap(done), function() {
+      that.instance.pub("42/there/hello");
+    });
+  });
+
+  it("should support multi-level wildcard in middle of topic", function(done) {
+    var that = this;
+    that.instance.sub("hello/*/end", wrap(done), function() {
+      that.instance.pub("hello/there/42/end");
+    });
+  });
+
+  it("should support multi-level wildcard at end of topic", function(done) {
     var that = this;
     that.instance.sub("hello/*", wrap(done), function() {
+      that.instance.pub("hello/there/42");
+    });
+  });
+
+  it("should support single-level wildcard at start of topic", function(done) {
+    var that = this;
+    that.instance.sub("+/hello", wrap(done), function() {
+      that.instance.pub("42/hello");
+    });
+  });
+
+  it("should support single-level wildcard in middle of topic", function(done) {
+    var that = this;
+    that.instance.sub("hello/+/end", wrap(done), function() {
+      that.instance.pub("hello/42/end");
+    });
+  });
+
+  it("should support single-level wildcard at end of topic", function(done) {
+    var that = this;
+    that.instance.sub("hello/+", wrap(done), function() {
       that.instance.pub("hello/42");
     });
   });
 
+  it("should support both wildcards in topic", function(done) {
+    var that = this;
+    that.instance.sub("hello/+/there/*/end", wrap(done), function() {
+      that.instance.pub("hello/foo/there/bar/42/end");
+    });
+  });
+
+  it("should not match multiple levels with single wildcard", function(done) {
+    var that = this,
+        callback = null;
+
+    callback = function(topic) {
+      expect(topic).to.equal("hello/42/there");
+      done();
+    };
+
+    that.instance.sub("hello/+/there", callback, function () {
+      that.instance.pub("hello/42/43/there");
+      that.instance.pub("hello/42/there");
+    });
+  });
+
+  it("should unsubscribe from wildcard topics independently", function(done) {
+    var that = this,
+        callback1 = null,
+        callback2 = null;
+
+    callback1 = function(topic) {
+      expect(topic).to.equal("hello/42/there");
+      done();
+    };
+
+    callback2 = function () { };
+
+    that.instance.sub("hello/*/there", callback2, function () {
+      that.instance.sub("hello/+/there", callback1, function () {
+        that.instance.unsub("hello/*/there", callback2, function () {
+          that.instance.pub("hello/42/there");
+        });
+      });
+    });
+  });
+
   it("should call each matching callback", function(done) {
     var that = this,
         callback = null,
diff --git a/lib/memory_ascoltatore.js b/lib/memory_ascoltatore.js
index d6f3cf3..0cb2d26 100644
--- a/lib/memory_ascoltatore.js
+++ b/lib/memory_ascoltatore.js
@@ -35,14 +35,14 @@ function MemoryAscoltatore() {
 MemoryAscoltatore.prototype = Object.create(AbstractAscoltatore.prototype);
 
 function containsWildcard(topic) {
-  return topic.indexOf("*") >= 0;
+  return (topic.indexOf("*") >= 0) || (topic.indexOf("+") >= 0);
 }
 
 MemoryAscoltatore.prototype.subscribe = function subscribe(topic, callback, done) {
   this._raiseIfClosed();
   debug("registered new subscriber for topic " + topic);
   if (containsWildcard(topic)) {
-    var regexp = new RegExp(topic.replace("*", ".+")),
+    var regexp = new RegExp(topic.replace(/\*/g, ".*?").replace(/\+/g, "[^/]+?")),
       that = this,
       handler = null;
 
@@ -89,7 +89,7 @@ MemoryAscoltatore.prototype.unsubscribe = function unsubscribe(topic, callback,
     regexp = null;
   if (containsWildcard(topic)) {
     this.removeListener("newTopic", callback._ascoltatori_global_handler);
-    regexp = new RegExp(topic.replace("*", ".+"));
+    regexp = new RegExp(topic.replace(/\*/g, ".*?").replace(/\+/g, "[^/]+?"));
     this._set.forEach(function(e) {
       if (e.match(regexp)) {
         that.unsub(e, callback);
diff --git a/lib/mqtt_ascoltatore.js b/lib/mqtt_ascoltatore.js
index 01cb978..e27fbea 100644
--- a/lib/mqtt_ascoltatore.js
+++ b/lib/mqtt_ascoltatore.js
@@ -93,7 +93,7 @@ MQTTAscoltatore.prototype.subscribe = function subscribe(topic, callback, done)
     var opts = {
       qos: 1
     };
-    this._client.subscribe(topic.replace("*", "#"), opts, function() {
+    this._client.subscribe(topic.replace(/\*/g, "#"), opts, function() {
       debug("registered new subscriber for topic " + topic);
       util.defer(done);
     });
@@ -135,7 +135,7 @@ MQTTAscoltatore.prototype.unsubscribe = function unsubscribe(topic, callback, do
   }
 
   debug("deregistering subscriber for topic " + topic);
-  this._client.unsubscribe(topic.replace("*", "#"), newDone);
+  this._client.unsubscribe(topic.replace(/\*/g, "#"), newDone);
 };
 
 MQTTAscoltatore.prototype.close = function close(done) {
diff --git a/lib/redis_ascoltatore.js b/lib/redis_ascoltatore.js
index 3db03cc..d17eca2 100644
--- a/lib/redis_ascoltatore.js
+++ b/lib/redis_ascoltatore.js
@@ -134,7 +134,7 @@ RedisAscoltatore.prototype._updateReady = function updateReady(key) {
 };
 
 function containsWildcard(topic) {
-  return topic.indexOf("*") >= 0;
+  return (topic.indexOf("*") >= 0) || (topic.indexOf("+") >= 0);
 }
 
 RedisAscoltatore.prototype.subscribe = function subscribe(topic, callback, done) {
@@ -145,13 +145,17 @@ RedisAscoltatore.prototype.subscribe = function subscribe(topic, callback, done)
     util.defer(done);
   };
 
+  var subTopic = topic;
+
   if (containsWildcard(topic)) {
-    this._sub.psubscribe(topic, newDone);
+    subTopic = topic.replace(/\+/g, "*");
+    this._sub.psubscribe(subTopic, newDone);
   } else {
-    this._sub.subscribe(topic, newDone);
+    this._sub.subscribe(subTopic, newDone);
   }
 
-  this._subs_counter.add(topic);
+  this._subs_counter.add(subTopic);
+
   this._ascoltatore.subscribe(topic, callback);
 };
 
@@ -170,7 +174,15 @@ RedisAscoltatore.prototype.publish = function publish(topic, message, done) {
 
 RedisAscoltatore.prototype.unsubscribe = function unsubscribe(topic, callback, done) {
   this._raiseIfClosed();
-  this._subs_counter.remove(topic);
+
+  var isWildcard = containsWildcard(topic),
+      subTopic = topic;
+
+  if (isWildcard) {
+    subTopic = topic.replace(/\+/g, "*");
+  }
+
+  this._subs_counter.remove(subTopic);
   this._ascoltatore.unsubscribe(topic, callback);
 
   var newDone = function() {
@@ -178,16 +190,15 @@ RedisAscoltatore.prototype.unsubscribe = function unsubscribe(topic, callback, d
     util.defer(done);
   };
 
-
-  if (this._subs_counter.include(topic)) {
+  if (this._subs_counter.include(subTopic)) {
     newDone();
     return this;
   }
 
-  if (containsWildcard(topic)) {
-    this._sub.punsubscribe(topic, newDone);
+  if (isWildcard) {
+    this._sub.punsubscribe(subTopic, newDone);
   } else {
-    this._sub.unsubscribe(topic, newDone);
+    this._sub.unsubscribe(subTopic, newDone);
   }
 
   return this;
diff --git a/lib/trie_ascoltatore.js b/lib/trie_ascoltatore.js
index 9b2356a..2a7b151 100644
--- a/lib/trie_ascoltatore.js
+++ b/lib/trie_ascoltatore.js
@@ -17,7 +17,7 @@ function TrieAscoltatore(settings) {
 
   this._matcher = new Qlobber({
     separator: '/',
-    wildcard_one: '?',
+    wildcard_one: '+',
     wildcard_some: '*'
   });
 
diff --git a/test/ascoltatori_spec.js b/test/ascoltatori_spec.js
index 69f7918..61f9194 100644
--- a/test/ascoltatori_spec.js
+++ b/test/ascoltatori_spec.js
@@ -114,7 +114,7 @@ describe("ascoltatori", function() {
         json: false
       });
       toClose.push(a);
-      expect(a).to.be.instanceOf(ascoltatori.MemoryAscoltatore);
+      expect(a).to.be.instanceOf(ascoltatori.TrieAscoltatore);
     });
 
     it("should create a new AbstractAscoltatore using function", function() {