The Live Search Maps team has made it easier for you to search for Photosynths. If you're not familiar, Photosynth was launched earlier this year and users can take multiple photos of a location and have it mashed up into a 3D image.
Now, if you want to find Photosynths of a certain location, go to Live Search Maps and enter in the location you're interested in. Once the results come up, look on the left hand sidebar for "Explore Collections" and click on it. Then look for a drop down menu next to the word "Show." Select Photosynths and any submissions related to the area you're searching will pop up.
Say you're searching Live Search Maps for Boone, North Carolina. Look for "Explore Collections" on the left sidebar and click on it.
Next, select "Photosynth" from the drop down tab next to the word "Show." Not all searches will yield Photosynths - only the ones where photosynths exist, of course.
A list of results for Photosynths will appear. Select the one that suits your fancy by clicking on "Click to Launch Photosynth Viewer."
Then enjoy the lovely panorama of the Appalachian mountains - or wherever your map search takes you. :)