Drawing explicitly from UCG intended as User Generated Content, the idea of UGS-User Generated Services put more emphasis on the role of the user as the one being able to create and manage services; in other words, this is about offering users appropriate (i.e. easy to use, enjoyable etc.) technical means not only to produce, publish and share content, but services as well. Among others, the SPICE project (where we at Neos are partner) supports the workshop on UGS to be held in Madrid next July on the initiative of the OPUCE project.
The full program is already available (see it on Scribd) and attendance is free to registered participants.