We didn’t ship Tomboy in 10.04 with support for Application Indicators because the experience wasn’t quite there. We lost things like the ability to pin notes, etc. The Rhythmbox and Banshee indicators were the same way, which is why we’re going to be using the Sound Menu.
Now we allow people to apply the same great technology (thanks KDE!) on the application’s icon in the launcher to create quicklists:
This is literally the Tomboy app indicator patch applied to the launcher with a “hey, this time you’ll be in the launcher” flag turned on, so it’s just the beginning.
Pins and all sorts of cool stuff can go in there. I’m looking forward to seeing what upstream application developers build. For example I’d love to have my favorite playlists in my banshee icon, or my incoming items in my Boxee queue, etc.
EDIT: Pretend the little arrow is pointing to tomboy and not cheese. ;)