It's certainly an interesting idea to try and fund a social network on micro-transactions alone.<p>It should be interesting to see what functionality they link to micro-transactions; Most games seem to do this with 'skins' and other aesthetic options, but if they go over the top in that respect it could easily become 'messy' like MySpace.<p>I do expect there might be a different demographic of privacy concious users who may be willing to donate in effect should the service gain traction.