I'm looking for a list of good FREE Stock Photography sites.

I came accross stock.xchng - the leading stock photography site .

I have been using a lot of pictures from there. Some of them are quite good, but sometimes you really have to search to find what you are looking for.

I'm looking to cut costs because I haven't made much in aff marketing so far, since I've only started with affiliate marketing this year.

May be after I make a few bucks I'll go for the paid photography, they seem to be of much better quality and have a professional look to them.

If anyone knows quality FREE stock photography sites please share.