Wikimedia Unified login

I've just ran into this page on Wikimedia http://meta.wikimedia.org/wiki/Help:Unified_login It states how you can merge/unify all ur wikimedia sites logging info.. ie. having a single sign-in on all of these sites.. Read the page for more details.. or just go & get ur accounts unified (I didn't have much problems coz all my accounts had the same user name & password :D) @ this page http://meta.wikimedia.org/wiki/Special:MergeAccount