After moving to Gnome 3 in Fedora 15, I was disappointed to find out the Gnome 2 applet was no longer supported.
There are several programs which have already been ported over to the new gnome 3 applet style, such as the IBus language input applet, and also the network manager applet. Gnome 3.2 is also bringing back the weather applet.
I would really appreciate if the revelation applet could also be ported as well. It's a very big part of the revelation functionality and Gnome 2 is quickly being deprecated.