The just-released Mailplane 2.1.6 from Uncomplex adds built-in support for the highly interesting Rapportive plug-in (see "Rapportive Plug-in Replaces Gmail Ads with Sender Info," 27 March 2010). Mailplane 2.1.6 also now works with the Share > Send via Mail menu items in the iWork '09 applications. With them, you can email your document via Mailplane in its native format or as a Word, Excel, PowerPoint, or PDF document. A few minor bugs have also been fixed, some of which were related to Gmail changes. ($24.95 new, free update, 6.7 MB)
Find Which Applications Phone Home with VirusBarrier X6
Worried about rogue applications or spyware "phoning home" with your private data? Turn on VirusBarrier's Anti-Spyware feature, and it will alert you to applications that attempt to connect to remote servers. Once you know which apps are phoning home, you can block or allow each individually, and you can even block or allow specific ports for each application, to ensure that your private data stays private.