After long time of waiting, Viber is here for FREE.
A new version of Viber for Bada released on 09/11/2012 (v.2.1.20 ).
In this version the chat is working very good and fast.
It is available only for WAVE 3, and WAVE M.
BUT we can use the WAVE 3 market (apps file):
Download from SamsungApps (WAVE 3/M): DOWNLOAD
Or you can use this unmodified application: DOWNLOAD