these: are obviously alien artifacts. The open mouth is unmistakable. Proof that god exists in fact. It's the darwin fish being eaten by the god fish of truthiness!
More pics (plus uber hi-res) here http://hirise.lpl.arizona.edu/phobos.php And theres some really weird looking stuff
I was going to say they looked like engine housing blisters. Especially since there's no deformation of the background surface at the center of those "craters"
For some reason the HD pics always look fake to me. Maybe it's because I grew up with all those crappy grainy photos NASA used to take in the 60's, 70's and 80's.
Unlikely, unless we are wiped out by then. If humans are still around in 50 million years we will be living on Mars and probably none too keen on the idea of a big rock wiping out the surface of Mars.
It's a rock. Someday it might make a good dockyard. Just get into that crater there and keep on digging until you have a hangar that can house a starship!