I find UI's that make me
> discover widgets using mouse-over feedback (rather than some unambiguous static
> visual indication) quite annoying.
>

Thanks for the answer. I agree that this could be annoying. I'm currently working on
mouse enter events that trigger a timer and then if there is a mouse leave before
the timer knocks in it will not trigger. But for this to work it can't miss the event!
That's when it become really annoying. 

Karl