VERY nice work here Zblader.
One thing that I could do is probably combine all of the tables found within your OP and merge them into the 'Photobucket' sticky topic (giving you and others here the credit ^^), so that people have a clear list of what art they can use, can't use, and should check before using. However, if you want this to be put up as a sticky, I'll have to do a few other edits here and there to make it more accessible (the Q&A format is cute, but some members would rather prefer an upfront table with sites they can and can't use). It's up to you guys about what you think is a better idea, although I prefer the former (as it takes less work and still grants you credit).
SIDE NOTE: ...I should probably mention something about people using artwork off of NON-ENGLISH sites; those are the worst to trace back to, since I don't know Swahili or Arabic words. T_T