Palm has released a cool new application called Palm Backup (beta) that can save a copy of your data to secure server via Over the Air syncing. The beta software is free and it's for Palm OS smartphones only. Here is more info:
"Names, numbers, appointments and to-do's, even bookmarks and speed dials. It's invaluable information. That's why we created the Palm backup (beta). It automatically saves a copy of your data to a secure server every day, from anywhere you have wireless data coverage. Palm backup is the easiest way to protect your essential information--and get it back again.
Features: -Backup your essential information to a secure server, without using cables or even your desktop computer. -Set an automatic backup schedule, and never think about it again. Or backup manually whenever you want. -Restore your essential personal information from anywhere you have wireless data coverage. -Available from Palm for free (for a limited time).
Requirements Palm OS software: Treo 700P, Treo 680, or Treo 650 smartphone with approximately 2MB of available RAM. Available for AT&T, Sprint, and Verizon Wireless customers. Wireless data services from a mobile service provider (unlimited data plan strongly recommended)."