According to a
ABC News scoop we assumed that Skype would be introduced to PalmOS-based PDAs next month.
Unfortunately, it turns out that porting Skype to Palm is
extremely difficult because the platform is
completely different from the platforms Skype runs on today.
So if you want to use Skype, you have to either wait, or switch over to the 'dark side' (which looks even lighter to me day by day).
Skype Forum Thread 1
Skype Forum Thread 2