If you find that VIM's auto indenting makes pasting in text, well, suck then enter this:
:set paste
and
:set nopaste
to reverse it.
Source:VIM.ORG
And, yes, I rated it as life changing. This one tip will make a huge difference in my use of VIM. I used to sometimes exit VIM, edit the file with nano -w and then re-enter VIM. This completely eliminates that so its huge.