Received one last week and one today:

drpsilver: wonderful grays in this photo of stones which are looking like sponges
sly: great picture of a footbridge, beautiful artistic print. I love it!

For those of you who are still guessing what's on my photo and what site is up:
Laurent has already unraveled the mystery http://www.apug.org/forums/1020213-post75.html.