I have to say though, since White Wolf came out with its guidelines saying "your characters are derivative IP and we own them" just a couple months ago, I don't have that same safe feeling WotC won't do the same.
Just because they say it, doesn't make it so.
For that matter just because WotC sends a C&D, doesn't mean they're correct... even if the site gets taken down. Whether or not either of these recent people/sites/whatever were actually infringing on WotC's copyright isn't for WotC or the alleged infringer to decide. It's up to a court. It's certainly not as black and white as people make it out to be despite how often the phrase "it's clear that" gets used by both sides. In both of these cases, it's a non-issue. WotC accused someone of infringing on their copyright and rather than fight both sites gave up (or were forced to by their ISP).
The legal options to challenge claims of copyright infringement exist, whether they're worth pursuing for the "little guy" and how much bullying big corporations engage in to get their way are another story.