I found a couple that used ~4space indent, and used tabs too (they seemed to expect 1tab = 8, as the code looked neat in a standard text editor).
Probably vi with autoindent, tabstop=8 and shiftwidth=4 (my preferred indent).
Of course everyone has his own taste and there's nothing wrong with 8. We just found that with 8 spaces there's very much indentation if you have quite some nested ifs/whiles/fors/whatevers. While still trying to stay under 80 chars per line (for a nice printing) you don't have much space left to put code on :)
bye Fabi