Social software services and challenges (or opportunities) for traditional peer review process

In this very interesting post Dario Taraborelli introduces "soft evaluation" concept:

"Traditional peer review has been criticised on various grounds but possibly the major limitation it currently faces is scalability, i.e. the ability to cope with an increasingly large number of submissions, which—given the limited number of available reviewers and time constraints on the publication cycle—results in a relative small acceptance rate for high quality journals. Although I don’t think social software will ever replace hard evaluation processes such as traditional peer review, I suspect that soft evaluation systems(as those made possible by social software) will soon take over in terms of efficiency and scalability" via David Weinberger