Uncomplex has tweaked Mailplane, its WebKit wrapper for Gmail, with a handful of minor fixes and improvements. Picture optimization in outgoing messages can now be controlled via AppleScript, dragged messages now disappear as expected, dragging images onto Mailplane's icon now optimizes pictures reliably, and keyboard shortcut functionality broken by Gmail changes has been restored ($24.95 new, free update, 19.9 MB)
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Encrypted Screen Sharing in Snow Leopard
In Snow Leopard, screen sharing in iChat can now be encrypted if both parties sharing a screen have MobileMe accounts and have enabled encryption (iChat > Preferences > Accounts > Security).