Algorithmic social ranking servicePeerIndexhas introduced one its most highly requested features today, debuting PeerIndex Groups – a new way to track and view the social rankings of groups of people – friends, enemies or competitors en-masse. PeerIndex already examines social activity across Twitter, Facebook, LinkedIn, blogs and Q&A site Quora, evaluating a users’ “online social capital” based on the activity of the individual across their various social platforms. With PeerIndex Groups, users are able to create and organise their friends into one easy to view list, ranking them by their PeerIndex rating....

Nuji, the startup we recentlydescribedas “Instagram meets Instapaper for social shopping”, has just rolled out a big update to its service, with an improved iPhone app and website. The service allows users to share a wide range of items that appeal to them with others online, picking out interesting goods from online stores using a browser bookmarklet or from brick-and-mortar shops using the iPhone app’s barcode scanning. Users can follow others whose taste they appreciate, creating a community around tastemaking....

We’ve written about social sound platform Audioboo a few times over the past couple of years, and in February wewroteabout how it was gearing up to take on SoundCloud in the social audio space. Back in June, wereportedthat its Android app had caught up with iOS, when version 2.0 was finally released. And today it has announced plans to open source its codebase for the Android mobile app. The last update Audioboo will make to the Android codebase will be to enable support for blind users....

Hot on the heels ofKlout‘s recent integration of Foursquare and Instagram, another social influence measurement service,Empire Avenuehas announced that it is adding support for both those services. Empire Avenue is similar to Klout andPeerIndex, in that it measures influence of its users on social services like Twitter and Facebook, but throws in the twist of letting othersbuy and sell stock in users, speculating on their future value. It uses virtual currency, butbrands are getting involvedand it’s a attracted a niche of users who love the game....

Jobs like Social Media Manager and Community Manager didn’t exist five years ago, so it’s unsurprising that tools optimised to help those handling multiple online channels and communities for businesses are only just evolving.SocialBase, fromOneFortyis one such tool. While essentially quite simple in what it does, SocialBase is presented in a way that may well appeal to those who need to maintain corporate social media presences across multiple channels and want to make sure that it’s as simple as possible to achieve....