Have you ever received one of those questionnaire emails? You know the ones I mean, 20 questions (or more), desperately seeking to find out inane details about your life and hopefully bring some email servers to a halt? I'm sure you've had one of those in your inbox at some point. That time is over. Now you can do it on Formspring.
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.
Location-sharing service Gowalla is preparing to launch its long-awaited write API (our Gowalla API profile). The move could makes its platform as desirable as its main competitor, FourSquare. With it, comes the need to relinquish a bit of control of the user experience, something Gowalla has considered an important factor of its success.