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)
Turn Off Filename Extension Warning
In Leopard, Apple fixed an annoying aspect of working with the Finder in Tiger. Previously, if you changed a file's extension, the Finder prompted for confirmation. But since no one has ever accidentally changed a filename extension, Apple thankfully added an option to turn that warning off in the Leopard Finder's preferences. Choose Finder > Preferences, and in the Advanced screen, deselect Show Warning Before Changing an Extension.