It's a close call as to my "favorite" microstock site. But Shutterstock is probably the most popular among the folks I know doing microstock. In the 7 months I've been doing microstock, Shutterstock (or simply SS) is my best performer, accounting for 53% of my total earnings. SS was the hardest to get into of the sites I belong to, but were certainly worth the effort. They have one of the lower dollars-per-image, but make it up in volume. Best part?? Instant gratification. Images uploaded to SS tend to start selling immediately. And 74.3% of my images at SS have at least 1 download, a ratio that has been remarkably consistant over the months.
My best sellers at SS: