This is a fun idea.
If you want to know where is 'hot' locally, you can tweet @wherenext with your location - e.g. '@wherenext Chelsea' - and it will tell you places nearby which are being mentioned in social media.
It also works on desktop or mobile through this site http://openyourcity.heineken.com/#/en-gb/wherenext/venues - see screen grab
It's a fun idea, but clearly it depends on the level of data being produced, which depends on the existence of people like me tweeting their social, food and drink experiences.
It's also clearly game-able, and many of the most savvy venue owners are actively trying to encourage people to post on social media while they're out.
#PowerParkPic WIN £500 this week by sharing you best pics of #ThePowerOfSummer and #RiversideFeast with us https://t.co/QiweSUQbKUIt also comes down to whether you trust machines (I'm assuming that this is automatically generated) or local experts to curate the best of what's on, for example to tell you in the screen grab that The Lukin is a far better place to go to than The Green Man.
— Street Feast London (@StreetFeastLDN) July 14, 2014
But... It's a good idea and I suspect that that there will be many more shots like this fired in the 'local' war before we find something that works reliably. Well done to Heineken, who are pioneers in experimenting with location.