Spell check and found a bunch of new comments with typos.

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) {

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;