Does your internet persona - The image you've created for yourself on the Internet - match your "actual personality".
Or do you tend to assume characteristics that you do not frequently exhibit in real life?
Things that could contribute to your online image would be stuff like your: Avatar, Signature, Font color, grammar/syntax, emoticons, and of course the content of your post and the manner in which they are made.
For example, I use a lot of smiley face expressions on the internet, but when in a face-to-face conversation I rarely change expressions.
I'm not really sure if this really makes for a good discussion, but I'm a bit curious, and at the very least it's something to think about (See, there's the smiley face )