Forgot to actually creat the _snarfedUrls attribute.
Forgot to actually creat the _snarfedUrls attribute.

mazaclub/mazabot-core,Ban3/Limnoria,jeffmahoney/supybot,ProgVal/Limnoria-test,Ban3/Limnoria,buildbot/supybot,haxwithaxe/supybot,frumiousbandersnatch/supybot-code,raboof/supybot,kblin/supybot-gsoc,mazaclub/mazabot-core,ProgVal/Limnoria-test,prashantpawar/supybot-rothbot