I'll simply post the feedback I sent to the site:
I'm intrigued and impressed by this project. It works, and I snagged a few good images.
minor issues:
• I can't sign up. Error message "The server encountered an error."
• I'm a fat man and frequently search for fat people imagery. You've blocked the word 'fat'.
• I love the full-size images when I right-click on an image, and the prominent display of a link.
• Took me a bit to learn that a left-click on an image refines the search. Love it though!
• The project has been in beta for four years? My first thought was that it's been abandoned, and I don't think you want that to be anyone's first thought. I'd suggest not mentioning how long it's been in beta.
• Maybe it's because of what I was searching for, but I noticed NO stock images, and THANK YOU THANK YOU for that. It's the key reason I've bookmarked same.energy.
• Overall, this is the most useful image search I've seen.
Thanks!