For one of the "MLP: Veitnam" pics, I want to edit it. Artist unknown, so who do I ask?

You should put a bit of effort into finding the artist first, like googling terms relevant to the image, or asking the poster for a source. If you still can't find the artist after that, go ahead :P

Riversyde said:
You should put a bit of effort into finding the artist first, like googling terms relevant to the image, or asking the poster for a source. If you still can't find the artist after that, go ahead :P

Thanks.

by the by, if you DO figure out who the poster is, do us all a favour and tag the original picture with an appropriate source/tag :D