In a post on their blog, Gowalla’s Josh Williams notes that the first version of the API is “nearly complete” and that they will be making an announcement about it in the “very near future.” Leading up to that, the service is taking some steps to ensure that user privacy is maintained as third-party services start getting access to their data. To that end, Gowalla notes that if you choose to turn your Passport Privacy on, your check-ins will not register in the public feeds for places and not register in Gowalla’s Top 10 lists.