I've always liked big boards better. Like Josh said, chaos is great. Also, what Experimente said. Here, if there's an argument, I don't think there is enough balance between opposing views. I think there are so many people over there, that there are actually some good, rich debates with so many points-- it's actually very beautiful, if it doesn't get too nasty, malicious and scornful.
Here, I feel like there are JC Ferrero fans, Lleyton fans and Rogi fans who primarily post. Over there, it seems more like there is a strong foundation for any player. You know who the players' fans are and who to talk to. And I am a Kim fan, and furthermore, I moderate the Kim MB over there, and I still don't have many cyberfriends over there in the Kim community. LOL! But I still have much fun there
Also, some peops said here, if you post here, you have to wait forever for replies. WTAWorld is like a city, it's fast-paced and quick--fulfilling. This place is a suburb. And I have been living the city life for half a year now and I prefer that fast-pace, and I definitely prefer it to the suburb.
I haven't really had a good foundation of cyber friends since last summer. So I can't truly vouch for this. But I really think if someone is looking for that, wtaworld is good because there is a good foundation of fans to so many of the players.