Is there a way to customize the services in the direct contact shortcut? I added a contact shortcut to my home screen, and I noticed that the Messaging icon in the pop-up changed to Handcent when I changed the default messaging app on my phone. One thing that's always bothered me is that there's a Facebook icon in the pop-up. Is there any way to customize what pops up when you press on a contact shortcut?
If you stop syncing Facebook with your phone book, that option will disappear.  I realize this isn't an answer to your question about customizing the pop-up but it may just serve your needs until a more skilled Android ninja happens upon this question.