One of the coolest ideas that I have seen lately is remote user collaboration on searches, that Microsoft is trying to introduce with their new product called " Search Together".
You’ll need a Windows Live ID; if you don’t already have one, it’s fast and easy to obtain. The tool uses browser tabs, so you’ll need Internet Explorer 7, and you need to install the plug-in. From there, things are pretty intuitive, but a tutorial exists to walk you through all the functionality. You can invite anybody in your Live Messenger buddy list to collaborate, and, if need be, you’ll want to add them to your buddy list before you get started.
SearchTogether allows participants to work together in groups in real time or at different times and also gives them the ability to rate and comment upon search results.
I love the idea and think that very soon the other major search engines will follow, with similar applications. To read more details go to Microsoft's research website or watch the short instructional video.