I am abandoning the What You See is What You Get (WYSIWYG) editor that is built into WordPress (they call it the ‘visual rich editor’). It has the extremely nasty habit of randomly inserting literally hundreds of [em] tags and [/em] tags into pages with complex formatting, such as my academic C.V. Usually, it closes every tag that it randomly opens, so the formatting isn’t visibly affected. As soon as you try to change some small thing, however, everything goes insane. Going back through and fixing all of these mangled pages is a big pain.
WordPress also has serious trouble dealing with [p] tags and line breaks.
I hope the cause behind this was identified in the recent bug hunt and will not trouble people after the next major release.
WYSIWYMGIYRRLAAGW: What You See Is What You Might Get If You’re Really Really Lucky And All Goes Well.
Anon,
That seems to be my experience.