Maybe this has something to do with Voxer's contact privacy and security issues: <a href="http://www.petergmcdermott.com/2012/01/voxer-contacts-privacy-concerns/" rel="nofollow">http://www.petergmcdermott.com/2012/01/voxer-contacts-privac...</a><p>and<p><a href="https://support.voxer.com/entries/20864097-security-bug" rel="nofollow">https://support.voxer.com/entries/20864097-security-bug</a>
Facebook will now start acting more and more like Twitter: "If you are building anything on our platform that we <i>might</i> want to build in the future, then you'll get thrown off the platform eventually."