I've spend hundreds of hours searching through Creative Commons photos on Flickr for a wall mural business and know how much flickr search results suck. No matter what I search for I always end up eventually getting asian children at a temple in my results or other nonsense.

Also, photographers with GOOD images don't sell them for $0.05 on Fotolia, Dreamstime, etc... Getty Images sucks because of it's restrictions and $3,000 / price tag and prehistoric policies. If you check the stock photo site's payout rates you'll realize why they have so many generic images and so little amazing photography. The good photographers keep their stuff off those stock sites.