Because you can't have enough online map views
Although not yet officially confirmed by Google, it seems the online giant has added yet another start-up to its portfolio by purchasing a company called Quicksee, which can offer Street View-type map images with a much easier process than Google currently uses.
Quicksee provides similar panoramic, 3D views of local addresses as Google's Street View feature in Google Maps. However, instead of using an expensive roaming vehicle with a mounted panoramic camera, it relies on users with their own video cameras and special software.
If true, it appears to be a new way for Google to reiterate its dominance in the world of online maps. The Street View feature has become unbelievably useful for anyone scoping out apartments, job locations, or any other specific address before traveling out there to see it themselves.
However, not every street in the country has been captured by Google's proprietary Street View car, and areas that have can be very outdated. Quicksee relies on a more social approach that could provide a more comprehensive collection of local geo-tagged images.