My impression is that all of the infodump data is in the public domain. Is that license explicitly stated anywhere? And, if it is stated somewhere, could we get that statement reprinted on the infodump’s home page and possibly bundled with the zipped downloads. It’d be nice to have some legalese posted somewhere so that no one feels at risk of getting into trouble.
Let's say I've got a picture that's in the public domain, and is in no way related myself, my family, or anyone I know (or anyone still alive, for that matter), and would be very relevant to an FPP i'm crafting. Problem is, I can't find it anywhere else on the internet. So, if I put the image up on a website that has no other content and was created for the purpose of showing people on metafilter this thing that is not mine, does it still count as a self-link?