I moderated an "Ask The Expert" session on Web Services at Flash Forward. The session was pretty well attended (considering that Flash Forward is predominantly a design oriented event), and the questions and discussion was positive and insightful.
 But there was an overriding sense of "tread carefully, this could be yet another over-hyped technology that won't deliver". It seems as though many are playing the waiting game, wanting to see practical, useful, high-profile, public facing Web Services before committing to the technology.
 Which begs the question, do these exist yet? If so, which are you using, and how? And if not, why not?