Back in November of last year, the location-based social event service Hot Potato launched at our Realtime CrunchUp. Today, they've taken what was a solid service, and made it a lot better with a number of upgrades. First and foremost, there is a new iPhone application that just went live in the...

It's getting tough to keep up with all of the location-related developments leading up to this year's SXSW, and they just keep coming. Tonight, on the eve of the event, Plancast has just had its iPhone application approved. The service, which we've previously described as a 'Foursquare for the...

This morning Google announced a new Blue Dot feature on the mobile version of Google Product Search that shows whether a product is in-stock at nearby stores. This seems to pose a threat to startup Milo, which highlights local inventory in product search results both on the web and mobile devices....