Opera, as some of you may know, uses the format=flowed type of email message formatting. At first, I was a little suspect as to whether or not this was better than my normal way of doing things. Keep in mind that I am a great UNIX lover, so the idea of doing something that was different really scared me. :-)
But after a few usages, I have to say that Format=flowed really seems cool. Without chaning the format of anything, I get a much cleaner looking quoting format, and I notice that it does seem to wrap nicer, and seems to look better in general. Me likey!
If you want more information on it, try out this FAQ.