Keep in mind, tone of voice is important in real life, but it gets lost online.
I love sarcastic humor, but it's near impossible to tell when someone's being sarcastic or serious when it's just typed words.
I wish that when I'm on the net, I push the keys harder the letters will get bigger, so instead of just using CAPS to UNLEASH THE FURY, you can show varing degrees of anger!
...sometimes I think just before I post a comment, and think to myself:
"Is someone seriously going to get mad at what I type?"