wow, didn't know so many had done it!
seems like an obvious thing a 3d modelling/scanning enthusiast would do.
now for something gloomy,
i sincerely hope i don't offend anybody.
please read Charles Stross' Rule 34 http://en.wikipedia.org/wiki/Rule_34_(novel)
The book covers the missuse of 3d printing and 3d scanning tech in the near future(incidently all this tech is now available today)
The book is not overly explicit, though it can be shocking.. for example one of the incidental characters.. a paedophile takes pictures of his targets and then 3d prints life size, photoreal, animatronic sex dolls of them.
so... might not be a good idea to have your kids' 3d scans available for download.
maybe i'm just paranoid.. but thought i'd share that here.