My site has no stylesheets (“how does it smell?”, etc.) but you probably won’t even notice because chances are your reading this in a feedreader.
In any case, it’s nice just to look at the flow of the document sans styles. Notice the “More information”
h2 tag that is normally hidden from view. With styles enabled, the visual layout makes this heading redundant but without styles, or for non-visual user-agents, it’s a useful marker.