Nimbuzz offers Chatrooms in Symbian and Java Phones, not in Android / iPhone (yet). Nimbuzz PC Client 2.2 version released with Chat rooms, but Its not available in 2.3 version.
Android users can install Nimbuzz Java Client (The must use Java Launchers for Android - Perform a Google Search please)
This post is for PC client chat room lovers. Download Old Nimbuzz PC Client with CHAT ROOMS
Let me know if the link is not working. Once you Install, If there is a software update Pop-Up comes, Dont give OK.
Keywords : Nimbuzz old version, Nimbuzz PC Client, Nimbuzz PC client with Chat rooms, Chatrooms, chat rooms