Please consider carefully before installing!
The official version of IE8 has been released for some time, yet people's evaluations of IE remain the same as always—continuously negative (pitiful)! Although it has improved greatly compared to previous versions, it is still bulky, and its speed can't match Firefox's (as for add-on extensions, there's no need for comparison at all). There are also compatibility issues with web standards compared to other browsers. In short, I'm not too fond of IE8 (especially after upgrading to the official version, viewing G in The World...).