Uncomplex's Mailplane 2.1.9 offers the capability to drag .webloc and .mailloc files into Mailplane to insert the URL encapsulated in the file into the message text. But the real reason to upgrade to Mailplane 2.1.9 is the fix to the problem that attaching files via drag-and-drop often didn't work if you had also upgraded to the recently released Flash 10.1 (which you want to do, since the previous version is a security hole; see "Adobe Flash Player 10.1.53.64 Blocks 32 Security Holes," 11 June 2010). The update also fixes a problem dragging text clippings to Mailplane, fixes a focus problem caused by upgrading to Safari 5, and improves performance when composing replies. Release notes are available. ($24.95 new, free update, 7.7 MB)
Find Wi-Fi Networks with VirusBarrier X6
If you're in a location with multiple Wi-Fi networks, it can be hard to figure out which is the best one to connect to. VirusBarrier X6 can help - open the program's Network window to view a list of available Wi-Fi networks, complete with the name, channel, and signal strength of each.