Yes...a search engine would bring people in randomly...but we're not too worried about that.
What we DON'T want to happen, is...say....someone posting a link to this forum at another large graphics forums (cgtalk or something) and then having 200 lens-flare, teapot inducing newcomers following it and joining.
Although were not currently putting too much effort into screening those who do come, we figure that there's not too much of a worry over 1 or 2 newer artists coming from a google link, then somewhere else (ie....DO NOT post this link at the3dstudio! hahaha)
Overall...once we get enough members, I don't see a problem with having anyone
join...but at this point were still trying to built a talented artist userbase first.
Btw...this isn't uncommon....even cgtalk screens their 3d Finished Work gallery, and removes images not deemed of being up to quality (I learned about this because someone complained since their work got deleted hehe