iStockPhoto can take credit for revolutionizing royalty free images. They permit anyone to upload images (vs. contracted artists/photographers) and the artist receives a royalty whenever the image is purchased (vs. paying upfront fees to the contracted artists). The good is unbelievable variety, often outside the expected and norm (independent artists). The bad is anyone can add images, so not everything is professional and polished…

Raster/Photo images: Yes
Vector images: Yes
Video: Yes
Audio: Yes
Pay Per Image: Yes (average for “Medium” image $9 each)
Subscription Download: Sort Of

Test Search Results:
1. “Fast Car” = 11,605 results
2. “Medical Consultation” = 18,889 reults

– Troy @ TLC