You've heard about Bing! But do you know about Microsoft 'Labs' other FREE stuff for photographers?
Most recently I've tried out:
Microsoft Pro Photo Tools for geotagging and ITPC tagging.
Microsoft Photosynth for a 3D experience. This is a very interesting proof of concept which I look forward to pulling out my old photographs for. Wow - just check it out.
Microsoft Image Composite Editor for Panos.
These tools are all FREE, and I'm definitely recommending any photographer to add these to their software arsenal.