Have you noticed the many tools to share your location? There's FourSquare and Gowalla, both about a year old. Then there are old-timers like Brightkite. And now, there's one that works with all three (and a couple more).
Foursquare has embraced the open maps movement. Russia's biggest search engine integrates with the Topsy API. Plus: Disqus comments available in Gnip, Microsoft launches its own Webmaster Tools API and 21 new APIs.
There's a new way to get thousands of local points of interest into your web maps: the CloudMade Data Market Place. There's a fee for using the data, but otherwise it's as easy as the standard CloudMade API (our CloudMade API profile). For a few hundred dollars per year, you can add any restaurant in the U.S., hospitals in the UK to your map, or one of about 80 datasets.