Skype Goes Mass-Market!
Now you will be able to call cheaper with your non Windows Mobile phone, Skype is now testing their official mobile client that supports Motorola, Nokia, Samsung, and Sony-Ericsson. The software will support free Skype-to-Skype calls and landline calls thru SkypeOut, which is usually cheaper than your carriers pricing. I may assume you would need 3G or Wifi to use the software. Official news on Skype.com