I do hate some of the things from it:
Firstly the spam in all the chatrooms.
secondly the newmail message that appears 1001 times a day
thirdly the ads
fouth the captcha these days(I know its reuired but then why when every time you change the room.)
But then I also like it for the reasons like:
Great features
Emoticons
smile
Now allows chatting over MSN too
file sending
buzz, voice and many more ....... Lol the lists of good's seems longer
Probably thats why I use it despite of the bads.