I have been using it myself for a year. What do I think? Not much. It gives no features over other browsers and is a major bloat ware, and the most annoying feature for me is that it is easy to accidentally deleted URLs from the drop down place. Its better than the truly terrible IE7 but Microsoft really lost it at IE 6 when they decided things that didn't make direct profit were not worth following up on.
Let me be pretty brutal on this, IE8 is still worse than Chrome, Firefox, Opera, and Flock. Most users will find it no improvement over IE6 and will complain to IT if they have to use it.
