Let's face it; the web browser is a dangerous application. Because it is what the Internet, with all it's malicious characters, sees of our machines.
H.D. Moore has publicly pledged to announce at least one browser vulnerability per day through July. This is one to watch. Note that he's not just looking at Internet Exploder, either. I can imagine most, if not all, popular browsers coming under his gaze. This is one to watch.