[efsavage]

I've actually been conditioned so thoroughly by flaky forum software to ctrl-a-c on every post before submit that I don't even think about it and sometimes I'm surprised when I paste later and get whacked with a giant forum post.

[udfalkso]

I also do this. Not just on forums, but on pretty much anything where I write a decent amount of text. I also use a clipboard manager in conjunction with this habit (http://itunes.apple.com/us/app/clipboard-history/id420939835...) that has saved my ass numerous times.

[timwiseman]

I have dealt with this a number of times, and any time I think I am going to write a comment that is more than a few lines long and has any real significance to me, I do it in a word processor or full text editor where I can easily review it and spell check it before posting.