diff --git a/code/map_data_calc_tools.js b/code/map_data_calc_tools.js
index 884acc40..a2c3369c 100644
--- a/code/map_data_calc_tools.js
+++ b/code/map_data_calc_tools.js
@@ -6,7 +6,7 @@
 // tile and a quadkey. Both the bounds and the quadkey are “somewhat”
 // required to get complete data.
 //
-// Convertion functions courtesy of
+// Conversion functions courtesy of
 // http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames
 
 
diff --git a/code/map_data_render.js b/code/map_data_render.js
index 6606a022..53ce23a4 100644
--- a/code/map_data_render.js
+++ b/code/map_data_render.js
@@ -470,7 +470,7 @@ window.Render.prototype.addPortalToMapLayer = function(portal) {
 
   this.portalClusters[cid].push(portal.options.guid);
 
-  // now, at this point, we could match the above re-clustr code - sorting, and adding/removing as necessary
+  // now, at this point, we could match the above re-cluster code - sorting, and adding/removing as necessary
   // however, it won't make a lot of visible difference compared to just pushing to the end of the list, then
   // adding to the visible layer if the list is below the limit
   if (this.portalClusters[cid].length < this.CLUSTER_PORTAL_LIMIT || portal.options.guid == selectedPortal || artifact.isInterestingPortal(portal.options.guid)) {
diff --git a/code/portal_detail.js b/code/portal_detail.js
index e99d5b7a..0f5557ab 100644
--- a/code/portal_detail.js
+++ b/code/portal_detail.js
@@ -1,5 +1,5 @@
 /// PORTAL DETAIL //////////////////////////////////////
-// code to retrieve the new potal detail data from the servers
+// code to retrieve the new portal detail data from the servers
 
 // NOTE: the API for portal detailed information is NOT FINAL
 // this is a temporary measure to get things working again after a major change to the intel map
@@ -54,6 +54,6 @@ window.portalDetail.request = function(guid) {
 
 
 
-})(); // anonumous wrapper function end
+})(); // anonymous wrapper function end
 
 
diff --git a/plugins/guess-player-levels.user.js b/plugins/guess-player-levels.user.js
index b51de2cd..1fa5f44e 100644
--- a/plugins/guess-player-levels.user.js
+++ b/plugins/guess-player-levels.user.js
@@ -317,7 +317,7 @@ window.plugin.guessPlayerLevels.sort = function(playerHash) {
 
 
 var setup =  function() {
-  // we used to sture level guesses as one localStorage key per player, named 'level-PLAYER_GUID'
+  // we used to store level guesses as one localStorage key per player, named 'level-PLAYER_GUID'
   // they're now stored in a single storage key - 'plugin-guess-player-levels' - so clear these old entries
   $.each(Object.keys(localStorage), function(ind,key) {// legacy code - should be removed in the future
     if(key.lastIndexOf('level-',0)===0) {
diff --git a/plugins/keys.user.js b/plugins/keys.user.js
index 7ba1697b..26921db1 100644
--- a/plugins/keys.user.js
+++ b/plugins/keys.user.js
@@ -155,7 +155,7 @@ window.plugin.keys.loadLocal = function(mapping) {
                           : JSON.parse(objectJSON);
 }
 
-// For backward compitable, will change to use loadLocal after a few version
+// For backward compatibility, will change to use loadLocal after a few version
 window.plugin.keys.loadKeys = function() {
   var keysObjectJSON = localStorage[plugin.keys.KEY.key];
   if(!keysObjectJSON) return;