unfortunately, you'll discover that rc tech has the better threads, and the threads we do have here are real light.
on ofna's forum, check out the posts by neuman - he seems to know quite a bit of stuff. i think he drives a hyper 7 (which is what i drive), and his posts have helped me out.
twf8 is a buggy forum (i think out of finland). there are some great reviews about various 1/8 scale buggies.
anyway, good luck.
oh yeah, there is also nitroreview.com. it's a wee bit germaine, but you might find something interesting. i found out it trying to gather info. for my landmax 2.