I always had tabs set to 4 in my .exrc, and screw the other guy who didn't do that and got hung-over lines - 8 characters is just too damn much whitespace down the left side of the screen, and two is ...

Personally, I like the idea of tabs, since everyone can have they indentation level that they prefer (e.g. some like 2, some 4, some even 8...). But everywhere I've worked uses spaces instead, so that ...