Not trying to steal SAFooty/Dutchy's thunder (I'll certainly be in that comp as well), but http://www.toptipper.com are also running a SANFL comp again. It's a nice site for those who like the option for slightly more sophisticated tipping (margins for each game etc), and I can vouch from personal experience that they do come good with their prizes (in the form of online sport betting vouchers) if you do well enough. It'd be good to see it supported - I'd certainly like a bit more competition there
And no, I don't work for them.