I'd like to write Markdown in VIm just as if I were using those fancy mardown-editors like Uberwriter or iA Writer. Of course, VIm is way more powerful, and that's why I'd rather use it. But I really miss the centered 80-char column of those apps. Can I get that in VIm? How?
Vim is a bare-bones text editor; very little in the UI appearance can be configured. That said, plugins like DistractFree - An WriteRoom/DarkRoom/OmniWrite like plugin and VimRoom emulate a centered window with (invisible) scratch buffers to the left and right.