Well, today I got a note from dA saying that my Best Of 2008 Tagwall got removed because it violated deviantART's copyright policy. I'm pretty much 100% sure it doesn't; since all the resources I used were either renders from PR that are free to use in signatures or images that aren't copyrighted at all, but apparently certain people disagree with me on that.
Quite annoying, but ah well, I guess I'll just reupload it and reopload it again if it gets removed again. Not going to bother with sending lots of messages to the Help Desk, that will just take more time and effort than it's worth.
This whole issue with dA removing signatures is really getting out of hand, though.