I will develop this if it isn't available yet, but I wanted to check first. Several forums I visit have a feature where you can preview the inside text. You simply move your mouse over the title of the post and a snip of the inside text of the post pops up.
For example: http://web.camaross.com/forums/forumdisplay.php?f=24
It's a simple title tag, and I can add it. I was just curious if anyone has developed this yet.