Keyboardr - Google Search Made Easier and Faster
Keyboardr is a search engine that combines google (both the search engine as well as images) with wikipedia youtube. It really is great. For example, when I searched the term "US history" search results began to appear as soon as I typed the letter "t" and continuously changed until I had fully typed "US history." Probably it will be better as a resource for your students, but if you are having your students create their own blogs (as I am), then it will be rather useful.