Internet Explorer 7.0 Beta 2

So I've been using it for some days now, and I think it is quite good in some respects (example: tabs), the bad part is that someone with not enough RAM might not want to use it specially if you have many applications fighting for memory. Yes, I could be using Firefox, but I'm somewhat lazy and plus I like to keep everything from one company in one system and not mix it with others (except for games of course). I'm also very expectant of Windows Vista and its "3D" UI. I haven't tried that new hotmail/msn live whatever it's called, because I already have 3 email accounts each from different companies (Microsoft, Yahoo, Google) and they already do more than what I need them for so why bother.