My most "popular model" is a model I made a while back; a low-poly large beanbag chair, that I don't even think I did a very good job on π : with around 400 views and 330 downloads a week. 8 people have added it in their collections, and it has 55 ratings. HOW!??! π² it has to be my least detailed model, easiest model(done in like 10 minutes), and doesn't even have that many tags!
model found here: http://sketchup.google.com/3dwarehouse/details?mid=de862f78d1412e5268d4f5a3519f61be
My second most "popular model" is a photo-textured version of someone else's posable version of someone else's colored version of someone else's extract of master chief from halo 3: with around 430 views and 250 downloads a week.
model found here: http://sketchup.google.com/3dwarehouse/details?mid=ec26ff8e5bcd25a25dfd2d7998768282
after those two models, the download rate plummets to 70, the 50, then 30, etc. I REALY don't get why certaion models are so popular π²