Keywords for the pictures include motility, sharing, expansion, community. Keywords for our business: playful, subtlety, sensitivity to design, simplicity, friendliness.
Prospective tagline : "Know where your pictures are". The logo must work with or without tagline, and in a "square version" for Twitter, Posterous, etc.
N.B.: We checked the Web 2.0 logo type because we are a web startup; we do not however want a logo which has all the clichés of the web 2.0 world (CMYK, gradients, rounded corners and -gasp- reflection)
MOST IMPORTANT, though: we're no designers, and these are only guidelines. If you have a good idea that doesn't respect a guideline or two, go for it. We'll be there all week to give you feedback.