diff --git a/project.clj b/project.clj
index 713ec5c..bdf9747 100644
--- a/project.clj
+++ b/project.clj
@@ -4,7 +4,7 @@
   :dependencies [[org.clojure/clojure           "1.3.0"]
                  [org.mongodb/mongo-java-driver "2.7.2"]
                  [com.novemberain/validateur    "1.0.0-SNAPSHOT"]]
-  :dev-dependencies [[org.clojure/data.json "0.1.2"]
-                     [clj-time              "0.3.2-SNAPSHOT" :exclusions [org.clojure/clojure]]]
+  :dev-dependencies [[org.clojure/data.json "0.1.2" :exclusions [org.clojure/clojure]]
+                     [clj-time              "0.3.3" :exclusions [org.clojure/clojure]]]
   :dev-resources-path "test/resources"
   :warn-on-reflection true)
diff --git a/src/monger/collection.clj b/src/monger/collection.clj
index 6c0421c..09430f7 100644
--- a/src/monger/collection.clj
+++ b/src/monger/collection.clj
@@ -142,7 +142,7 @@
 ;;
 ;; monger.collection/count
 ;;
-(defn ^long count
+(defn count
   "Returns the number of documents in this collection.
 
   Takes optional conditions as an argument.
@@ -150,12 +150,18 @@
       (monger.collection/count collection)
 
       (monger.collection/count collection { :first_name \"Paul\" })"
+  (^long [^String collection]
+         (let [^DBCollection coll (.getCollection monger.core/*mongodb-database* collection)]
+           (.count coll)))
+  (^long [^String collection, ^Map conditions]
+         (let [^DBCollection coll (.getCollection monger.core/*mongodb-database* collection)]
+           (.count coll (to-db-object conditions)))))
+
+(defn any?
   ([^String collection]
-     (let [^DBCollection coll (.getCollection monger.core/*mongodb-database* collection)]
-       (.count coll)))
+     (> (count collection) 0))
   ([^String collection, ^Map conditions]
-     (let [^DBCollection coll (.getCollection monger.core/*mongodb-database* collection)]
-       (.count coll (to-db-object conditions)))))
+     (> (count collection conditions) 0)))
 
 
 ;; monger.collection/update
diff --git a/src/monger/util.clj b/src/monger/util.clj
index 8651ab3..78707d7 100644
--- a/src/monger/util.clj
+++ b/src/monger/util.clj
@@ -41,4 +41,4 @@
   IPersistentMap
   (get-id
     [^IPersistentMap object]
-    (or (:_id object) ("_id" object))))
+    (or (:_id object) (object "_id"))))
diff --git a/test/monger/test/collection.clj b/test/monger/test/collection.clj
index b1c5ed7..9e5012f 100644
--- a/test/monger/test/collection.clj
+++ b/test/monger/test/collection.clj
@@ -46,6 +46,13 @@
     (mgcol/insert "people" doc)
     (is (not (nil? (monger.util/get-id doc))))))
 
+(deftest insert-a-map-with-id-and-with-default-write-concern
+  (let [collection "people"
+        id         (ObjectId.)
+        doc        { :name "Joe", :age 30 "_id" id }
+        result     (mgcol/insert "people" doc)]
+    (is (= id (monger.util/get-id doc)))))
+
 
 
 ;;
@@ -79,9 +86,13 @@
                                     { :language "Clojure", :name "incanter" }
                                     { :language "Scala",   :name "akka" }] )
     (is (= 4 (mgcol/count collection)))
+    (is (mgcol/any? collection))
     (is (= 3 (mgcol/count collection { :language "Clojure" })))
+    (is (mgcol/any? collection { :language "Clojure" }))
     (is (= 1 (mgcol/count collection { :language "Scala"   })))
-    (is (= 0 (mgcol/count collection { :language "Python"  })))))
+    (is (mgcol/any? collection { :language "Scala" }))
+    (is (= 0 (mgcol/count collection { :language "Python"  })))
+    (is (not (mgcol/any? collection { :language "Python" })))))
 
 
 (deftest remove-all-documents-from-collection