When you select text on a webpage, a little button pops up giving you access to a dropdown menu. On the menu are "accelerators".

Two very useful accelerators are Google search and Encarta. If you click on Encarta you instantly get definition in another window- you don't have to go anywhere. With Google there is no more cutting and pasting, the search is done by selecting the accelerator.

There are more accelerators and it looks like more will be added. Oh another one is an instant translator.

I haven't done this but they have "webslices" where you can run a single feature like a weather report or calculator from another website.

I like.