citizengodden,
Thanks for your ideas!
1) You know, that's a long time that I'm willing to allow extensions other than '.png' for screenshot...and your message made this idea come up to the 2nd place in the 'todo' list (just behind the systems database ;-))
2) That's a good idea too! You know, my main concern is to keep mGalaxy as simple as possible, practically...and esthetically. So, even if it's "good" for me, I won't retain the advertising option which I see as a little intrusive (if people with just a few screenshots have to see that space constantly). But I retain the idea of a little logo and link at that place, thanks!!