A WordPress plugin that would let everybody log in as 'admin'… sounds stupid, right?
It might, but this is what I really needed. When I'm testing something under different browsers, I hate it when I have to login multiple times (once with MSIE, once with Firefox…) to view the same admin page. So, basically, No Login makes your admin backend a free-for-all no-login area. For localhost test sites only, obviously.
Only localhost ? Add one config to set static IP is a good thing for me because I don't use my desktop as server ;)