I'm sure this happens to the active Muppet Wiki editors all the time, but I always raise an eyebrow when I come across an image I know came from ToughPigs.com on somebody else's website.
Obviously we have no claim to the screenshots we take, because we don't own the productions. And the internet is pretty much a free-for-all with that kind of stuff. But today when I saw an article on Cracked about pop culture parodies of Donald Trump, one of the images they used for Joe Pesci as Ronald Grump looked awfully familiar. I'm pretty sure it's one I took back in 2009 for my review of the Sesame Street 25th anniversary special, which was later uploaded to the wiki for the Ronald Grump page.
So that's kind of funny. To me.