Well I'm not sure about any plugins on that, or whatever. But, if you're talking about using something like MSWord or whatever to write up articles, then copying and pasting them into the blog...DON'T.
It will spit out errors for you. Maybe not right away, but it will.. Use NotePad2 http://www.flos-freeware.ch/notepad2.html
On that question she has, is there away to be able to paste in stuff instead of having to hit: Ctrl + V to do it? LOL!
- Wasn't trying to sound mean, but there was just a few people lately that did that..and had alot of problems with their site's layout and posts. Stuff went screwy for them.. =(