It seems that it might be more helpful to whitelist sites. The web grows too quickly, and the mass of spam sites overwhelmingly so. If I had some way to blacklist sites, I'd end up spending a lot of time doing so. In fact, it could quickly take up most of my search time.<p>If, though, we could whitelist sites, it seems that results would get cleaner faster. I don't care about how many bad sites are out there, as long as helpful sites make it to the top. Plus, I typically use just a few sites to access reliable information anyway (the number's about 7, right?), so if I can whitelist results from those sites, I'll probably find my desired content more quickly.<p>What about the case when there are 30 spam sites listed before 1 good site? That hasn't happened too often for me. Instead, the results I'm looking for are usually just 4 or 5 spots down the front page, and very occasionally on the second page.<p>White listing seems like it would still be faster and easier for now.