The fuss about Google + and pseudonyms is based largely around issues of identity, rather than anonymity. There have been quite a few posts about this, Hamlet Au over at New World Notes makes the observation that Hamlet Au brings more results in Google search than James Wagner Au, I nearly always call him Hamlet, Hamlet is an identity.
Tateru Nino has a few posts on the subject, one of which discusses why it’s difficult to prove the name you go by on a daily basis. However this discussion in itself proves the folly of social networks encouraging people to social network with names that aren’t as widely known online as pseudonyms.
Google haven’t really given any convincing reasons as to why Google + is following Facebook down the anti pseudonym route and for Google, this is extremely disappointing considering how they tailor adverts to content, they absolutely do not need a database full of real names to make Google + work whereas Facebook came from a different angle and whereas I don’t see why today, they still insist on real names, it evolved from people knowing each other at University.