If the non-white "strong and flexible" materials are actually just normal WSF dipped in paint
after a quick brushing, I think that this should be stated clearly on the materials page. (This
seems to make them a poorer solution than just washing and (spray-) painting a model after
delivery.)
The current text creates the impression that the process uses appropriately colored starting
materials ("nylon plastic that comes in a variety of colors" and even different maximum
dimensions on the design guide page, just as if these were done on a different machine).
To me, shapeways has had a much more professional appeal than the other low-cost competitors.
(Said as a long-time lurker who just had his first few parts printed). Please keep up your technical
standards (material documentation, terms&conditions WRT pricing scheme, print reproducibility)
before you even consider adding facebook "like buttons" complete with their js tracking code and
other short-lived "community experience" fads.
Martin