Mouseover forum descriptions?

Just a thought about a small cosmetic tweak which some might find appealing.

On some forums (and I think a couple of 3rd-party Invision themes) I've seen a function where instead of beneath the forum title, a forum description appears in a small window when the user puts their mouse pointer over the forum name.

I, for one, happen to like this quite a bit as it's a unique way of streamlining content on a forums listing page - it doesn't bombard people with text and gives a forums listing a little more dynamic flavour.  Seems like a small thing, but I think it's pretty slick and would like to see it as an option someday.