hi, i use rocketmelt browser. it seems to be very safe, and it great if you have a facebook account. any webpage you go to facebook is there. even if you are doing something on your desktop such as paint,...you can still see notifications pop up on the lover right hand of the screen.
follow this link to download the browser,...... http://rockmelt.en.softonic.com/
it also does not install stupid search bars to the browser like explorer. and even my friends say its so much faster.
Edit by mod, Rockmelt is not a good idea and softonic installs a 'helper'