Re: Thread Titles: “Pop up” OnMouseOvers
We’ve had this discussion already when the new version of GS was introduced earlier in the year - most computer savvy surfers seem to like it - including myself… tooltips are cool - saves you time to click a link, wait for the thread to to load and then read the first few lines to get an idea of what it’s about.
Besides, why would you even take your mouse over a link if you weren’t contemplating clicking it in the first place? 
This sort of thing would score pretty high on Nielsen’s Website Usability index: Facilitates Navigation: Check ; Improves Interactivity: Check ; Enhances Response Time: Check.