one of the most things a like about IE is the accelarators. The whole idea of this new feature is to save user time when searching or requesting an information. How? For example, if you want to translate a a word or a website, you don´t have to open a translate web site. You can just rigth click, choose the translator and voilà! You got it!
In the link below MS IE Team talk about the accelarators for Windows 7 and how you can customize it.