I just downloaded GridMove today, and boy is it incredible!  It's working flawlessly for me, and I'm using two 1600x1200 monitors and UltraMon, too.  I was a little worried that it might bug out at first, but no such thing has happened.  Thank you so much for implementing it, jgpaiva!  Honestly, the Steam issue is absolutely negligible.  I have no complaints.  Thanks for sharing such a wonderful piece of work with the community.

I'd love to donate, but I'm currently extremely poor and jobless (but looking), and so unfortunately I'm in no position to do so.  I'll remember you for when I actually have a bit of money, though, and I'll show GridMove off to some of my more "rich" friends.  =)