Whenever I post on Gamespot, I've become used to being able to make my text bold, underlined, and italic without having to do any html stuff. Same applies for putting on images, but I've gotten used to that.
Other ideas? Hmm...
How about fonts for Usernames? Obviously picking form a list that all computers have. Also, how about outlines and shadows! I'd love my KBABZ title to look a bit more like this (smaller, of course...
^Wow! I've used the 'Negative' colour!!^

_________________
I was sad when I found that she left
But then I found
That I could speak to her,
In a way
And sadness turned to comfort
We all go there