Bing Toolbar has the right idea! Bringing content to me based on what I am doing at the time. I am of the mindset that the computer should help me find information instead of making me dig for it.
A friend of mine and fellow Microsoft Architect (Todd Van Nurden) has been brain storming a similar idea on getting the computer to do more work for me when it comes to looking thru this incredible sea of information. The thing that caught my attention with new toolbar from Bing is it's ability to provide information and contextual searching without forcing me to have multiple tabs open. I enjoy the fact the information is also actionable.
Give the new bing toolbar a run and tell me if you like it. - http://toolbar.discoverbing.com/toolbar/