I'm not going to talk about this at length as Paul Glazowski has already done the job at Mashable, but I would like to express my concern at the recent trend in bands and artists creating their own social networks. The most high profile of these have been Radiohead's W.A.S.T.E. Central and 50 Cent’s thisis50.com.

I'm all in favour of bands creating and nurturing communities around their official sites – this has been happening for years with artist forums, and has grown to include commenting and user generated content such as photos and fan remixes.

It's possible that if OpenSocial takes off then this kind of fragmentation of the social web will be easier to manage – but until then it makes sense to engage with your fan base on the existing (and hugely popular) social networks such as MySpace, Bebo and Facebook. We only just got everyone together in one place – why leave so soon?