Been around for as long as the old tale of "profitable gambling script"
Even
if the wallet files are legitimate... if the users are willing to part with it, then it means it's virtually uncrackable. Moreover, it doesn't mean that they don't have backups for when technology advances to a point where they CAN crack the password.
I know I would absolutely never give away my wallet files to anyone if I knew I had even the sharpest margin of getting into it.
Flag it up!
https://bitcointalk.org/index.php?action=trust;flag=462https://bitcointalk.org/index.php?action=trust;flag=463