Here are some links to some useful Sims sites. There are thousands of sites out there so this isn't even the tip of the iceburg. If you have a Sims site or know of one send us a link. We'll check it out and add it to our list if it's of enough use to the Sims community at large.
SimWardrobe - Really cool downloads. Some of the most unique objects I have ever seen are at this site.
Around the Sims - Downloads which are both Mac and Windows compatable
7 Deadly Sims - Cool downloads. A must for every simmers favorites.
The Sims Resource - Everything you could ever want for the Sims game. A HUGE archive. Only problem is is that it is SO large it takes forever to find anything. To get the good search features you have to get a paid membership.
The Well Dressed Sim - Some great downloads here. Some of the best ones require you to buy a membership though.
Steve's Skins 2000 - A great selection of Sims stuff; objects, celebrities, you name it.
Persimmon Grove - Want some cool mac objects (such as the new flat-panel iMac)? Go here! You won't regret it.
8th Deadly Sim - The best, most unique objects you'll find anywhere. (Paysite)
Millenium Sims - Great objects here including "The Magic Mirror".
Simzalabim - Home to the great Caesar Hotel theme and other fine objects and skins.