Not sure what your friends are up to as Friday night progresses , or can't decide where to go? Nightvibes sorts through the Facebook check-ins of your friends and groups them, giving you a sense of where everyone has landed.
As well as letting you view a 'social map' of where your friends are, the site also lists discounts and special offers at some nightclubs and other venues. Right now the deals in the app are Melbourne-only, but it's a potentially interesting idea if a lot of your friends are enthusiastic Facebook users. NightVibes is a free download.
NightVibes [iTunes App Store]