Online private shopping clubs like Gilt and Vente-privée (directory here) are perhaps the most successful incarnations of social shopping. Whilst they don’t typically offer reviews, recommendations, registries or co-browsing, they are built on an eminently social invitation-only member-get-member mechanism that oils the word of mouth wheels.

But how about integrating some more social shopping technologies?  The guys over at FreshNetworks discuss this.  And whilst Reviews are probably out, given the short “flash sale” style of these site, co-browsing, registries and social recommendations (based on profile similarities) would be useful, and could really boost sales. So come on private shopping clubs, let’s go social!