The current contest(in the forum) on sims2.com:
There are always contests on the forum and if you want to join one of mine, then just choose one that says it is by: alishawhitten123
here is a link:
http://bbs.thesims2.ea.com/community/bbs/start.php?openItemID=item.129,root.1,item.43,item.61,item.104,item.23
(p.s. this is the sims2 website challanges catagory for mainly contests and more!)