How can I import contacts into iPhone from Palm Centro? I'm planning on purchasing an iPhone 4, and I want to know the most direct method of copying my contacts from my Palm Centro to my iPhone. Extra points for solutions that work on Linux.
Have a look into SyncML, it was the only way i managed to get my contacts out of my decade old Nokia. 

I'm not sure what the iPhone uses as a contact manager on Linux (Would MobileMe be a good workaround?), but once you've got them out, it's a lot easier to import them into something else.

Google Sync is also worth a look and would avoid your desktop altogether.