Every day Foursquare users create millions of check-ins using the location-sharing platform. Those may be only a small fraction of the traffic seen by its API, which we've estimated receives at least 5 billion requests per month. The company continues to expand the local data made available via its API, so developers of all sorts are finding it a rich resource for building their apps.
Adding new features, service updates or interesting content to your business blog is great, but how do you ensure that your users know the cool new stuff is even there? Using a tool like WhatsNew is one way to tackle this issue. It's a service that provides an easy way to show repeat visitors what's new in a given service or application. The WhatsNew API offers even more flexibility, as it allows developers to customise the WhatsNew widget to better suit their specific needs.
Favstar, a service that helps users "find great tweets and interesting people to follow", has announced that it will be shutting down next month because of changes Twitter is making to its APIs. Favstar's creator, Tim Haines, was left with no choice but to shut his service down due to API changes.