Free FUN Online Multiplayer games?

It's rare to go online and find free games that support Multiplayer... but when you do usually there's a major flaw with them, like Quake, adjusting the screen appropriately is difficult, Runescape grown men wanna rape your 13 year old daughter, and for many others they just LAG. Ironically, OMGPOP games are fun, with a thriving community and completely unique site, I highly recommend checking this out.

The following is a signing up link, if you sign up upon following this link, you'll be giving me free cash and stuff... oh and XP. And I'd really appreciate it.
http://www.omgpop.com/?r=6gm28

Here's just the website, you can play the game without making an account, so if you do choose to make an account later on, just come back here and select this link above to give me props. Thanks.
http://omgpop.com/

Looks nice. I will play later today.