The home page contains a background image which contains “hotspots” used to show off some of the search queries available at Live Search. The home page background images are suppose to change over time and thus generate different query “hotspots” for the end users to play with.
Here is a picture of the new home page, as I see it now:
If you look when the page loads, you will see hotspots fade in and out. If you hover your mouse over the page, you will notice that those hotspots will activate and show you a query. Here is one example of a hotspot on the Live Search home page:
This specific result took me to a Live Video Search query for animals in Bostwana. But other hotspots show off web search, map search, and so on.
This looks like another way for Microsoft to generate more search queries, e.g., come play the Live Search home page scavenger hunt, if you will.