'''[https://addons.mozilla.org/en-US/firefox/addon/copy-as-plain-text/ Copy As Plain Text]''' {web link} Removes formatting from copied text.

Well, here's a loaded possibility for you... I recently downloaded a copy of the Clearly addon from here: http://download.cnet.com/Evernote-Clearly/3000-11745_4-75805658.html It's the real deal, but be aware that you have to disable Firefox from disallowing unsigned addons so that it will install. Now for the (maybe) bad news: Firefox stopped restoring sessions for me, and I tracked the problem down to the Clearly addon. When I disabled Clearly, Firefox went back to normal operation. If you normally don't start Firefox with previously-used tabs, then that won't matter to you at all, and Clearly has functioned completely correctly otherwise. The question I ask myself is if the problem is caused by Clearly (unlikely, since it is the real Firefox version of the addon), or if it's caused by any unsigned addon. I'd love to find a cure for my issue, but it really doesn't matter. Clearly works when I need it to, and I can leave it disabled when I don't. I agree with you...it's awesome!