Nimbuzz is free mobile calls, free instant messaging with girlfriend on Nimbuzz and on Skype, Facebook, Google Talk, MSN/Windows Live Messenger, Yahoo! Messenger, ICQ, AIM/ AOL Instant Messenger, MySpace, and more!

Here are the new features:
Location sharing – share your location with your Nimbuzz buddies.
SkypeOut – make calls to cell phones and landlines using SkypeOut credits.
SIP calling – make calls to cell phones and landlines using one of our SIP partners.
Dial-pad – dial any phone number quickly and easily.
Improved UI:
- Active chats are now directly accessible through the top of the buddy list.
- Buddy profiles.
- Switch between Group views through the buddy list.

Download
Nimbuzz v1.3.1 for winmo Pocket PC
Nimbuzz v1.3.1 for winmo Smartphones