Someone should make a global map with a web app that you can place a search engine protected email address on + GPS location - to contact in case of desire to grab a coffee over locale-focused startup & tech convos. Boom.
User opens app, makes a possible meetup that s/he is into , it then shows up on the map as just the title of the Group, along with maybe an interest count of initially 0.
If others click on it enough, the original users gets notified that this 'has momentum' and whether or not they want to schedule an actual get together. If they do, all other people are notified of the event.
like meetup.com, but the emphasis is on the location.