In a time when David Cameron tries to push his vision of the "Big society" to no avail, it's good to see social good come to the rescue as streetlife.com is introduced.

Simply put, it's the local nature of Foursquare with the interconnectivity of Facebook, and the active transactional engagement of craigslist.  The team behind the site say their mission is to let users "create an online profile and connect with people, groups and businesses in their area, to share practical information, advice, opinions, skills and resources".