Apparently Makerbot’s in-house lawyer has more important things to do than explain legal jargon to the public.
In a concise and coherent post, Rich McCarthy explains how Makerbot has structured their legal relationship with Thingiverse contributors. The short of it is that they are using roughly the same terms as sites like Youtube.com, they make no claim of ownership on anything uploaded to Thingiverse, and whatever license you attach to your work (like Creative Commons) they respect.
Well…that’s it. I don’t like doing tiny posts, so here is Josef Prusa explaining how to use the “new” Makerware program with old “unsupported” Makerbot printers.