Both Wordpress and Gmail have full blown wysiwyg, and many other sites such as facebook and Twitter have wysiwyg-like features in their messaging/commenting. What site bigger than these use markdown?
Yeah, you see plain text, and you get plain text. Big deal.
> What site bigger than these use markdown?
reddit, stackoverflow, discourse, all use MD. Granted, none of them are bigger than gmail (AFAIK), but they do add a pretty huge base.
Nope, not quite. @Tagging someone will suggest and highlight users. Not a full blown WYSIWYG but in the same calibre of technical problems and reasons why people stay away from WYSIWYG.
I had forgotten about Gmail, so I guess this is the exception to the rules. On the other hand, markdown is supported on Reddit, Stack Overflow, Github, and many more.
I don't find gmail to be an exception to the rule at all - all the big webmail providers offer full WYSIWYG support.