Quote from von*ferretI'd suggest again, tracking down the actual owner of the texture before using them. Its the polite, respectable, proffesional thing to do.
Erm, since all these textures have been posted in one massive thread with no credits, it is a little hard for people to track down the authors. I mean, how many authors are there? 5? 10? 50? 100?
Perhaps the pack overall could have credits for all the people that contributed, and then anyone wanting to use a texture would credit everyone on that list, cause tracking down the author of one individual author seems a little impractical unless someone remembers specifically who submitted what.