A thing that I just found out, and its huge to me cause its so useful: if you select some text over a document or browser or whatever and then press search key it will just take you to Bing search with the selected text!
Actually... it does work for web sites! How, you ask? You have to actually copy the highlighted text, then press the 'Search' button. Et viola, mon brav. As Del would say. I expect this will work in any app that lets you copy text. Have fun, chums.
Sadly it only works in the browser; it would be cool if I could also search with a tap in an app like, let's say Mail... :/