 Dan Heller wrote a interesting post in 2006 about how people find images to purchase.  I wonder if this is still the case or have agencies got their SEO act together.
http://www.danheller.com/blog/posts/do-buyers-use-search-engines-more-than.html
“The question then becomes, are your chances of getting traffic converting to sales higher on search engines, or if your photos are with a stock agency?”
I have built my Symbiostock sites to find out the answer to this.
