Bcoz I am surfing web a lot . I have special requirements to the speed of browsers. So far I have tried main stream browsers like IE, Maxthon (IE core), FF2, FF3, Chrome . Today I used all of them to surfing on the internet and compare the speed and properties . I find I begin to like FF3 . However it still need improvement . FF2 used to be slowly , I don't like it very much . Now FF3 is much faster than FF2. The disadvantage is FF3 cost more resources comparing to maxthon browser . I have tested, maxthon with three windows takes up 24K RAM while FF3 with the same 3 windows takes up 68K RAM . Maxthon is faster than FF3 . The advantage of FF3 is that it is very safe and has lots of addons which are powerful and helpful . I will use only FF3 if FF3 cost less resources as maxthon . (PS. I remember , maxthon is developed by top program, but I didn't remember his name . Maxthon has been developing and have new version all the time)