tedster - 9:09 pm on Jun 3, 2010 (gmt 0)
The only true evidence would be a link, right? And we're not going to offer that opportunity here - we don't do site reviews.
However, it's safe to assume that some of the members who defend the use of WYSIWYG here have done exactly that, and I know that it's the case. Of course the WYSIWYG user first needs to know what accessibility and usability ARE - and that's not the point of a WYSIWYG tool.