I'm not trying to be a DICK here at all, but honestly this is never going to work at all.
The simple "add a page" search system hasn't worked for a long time. That's why Google, Yahoo, Ask, etc use spiders to crawl to find sites. Not to mention, for your search to be viable, you'd need a heavy duty server to store the information you gather. Ultimately, if for some reason it does catch on, you need the resources to maintain it.
I just don't think it's going to pan out the way you're expecting it to, and you're not going to get a diverse enough demographic for it to be useful.