zork - 4:12 pm on Apr 9, 2013 (gmt 0)
(1) By "guy didn't contest" I'm assuming that means you settled out of court which means you really don't know if your case would have held up in court. Of course, I have no idea what the case was about, the guy probably willfully stole your work if he settled.
(2) Nice, good to know!
(3)Yes, but you wouldn't be able to sue someone for new work added to your site after you registered the site as it wasn't originally part of the group at the date of registration. You would need to re-register your site after adding content to it, which leaves a gap for people to steal your work (unless you constantly re-register it and pay the fees)