Another 5cent;
not only the story is a bit old, but there exist free/open source tools that provide the same services, i.e. reconstruction of 3D models from your uncalibrated photos. Look at http://www.arc3d.be/ and to http://meshlab.sourceforge.net/;

The first one (arc3d) is a free-to-use service that allow people to upload photos and get back a set of 3D depth maps well as the relative vantage points from where the uploaded images were taken and the settings of the cameras.

The second one (MeshLab) is an open source tool that allow to load, inspect, process and integrate the data produced with the arc3D service, so that you can obtain a 'clean' 3D model and export it in a variety of common 3D formats.

So if someone wish to try by himself this kind of technologies, the tools are there.