My company, flashstock.com, is currently doing a massive campaign across most of the US for photos of destination cities. We have 45 more places to go before september.
We are similar to a stock house, but all the requests are custom ordered from client, agency style.
Feel free to sign up, we need more microstockers! Better rates and MUCH higher acceptance rates than the majority of stock sites because we cap contributors based on needs. Application form is at newbielink:http://www.flashstock.com/contributors [nonactive]