Sinezub bluetooth chat In theory, restrictions on the number of users there. For messaging applications create several ad hoc network using a data transmission channel bluetooth. Check in practice:)
Application built on principle of dolls - embedded into itself, and can transmit itself via bluetooth using OBEX File Transfer.
MobJab Mobile Messenger MIDP 1.0 MobJab your very own Instant Messaging and Presence (IMPS)client for FREE. No need to send expensive SMSes to your freinds. With MobJab you can also chat with your freinds/buddys
We Chat Beta App The WeChat application has messaging, group chat, photo streaming and sharing
Papaya Papaya turns your phonebook into a fun and useful social network! It allows you to communicate with your friends cheaply and easily, no matter where you are
mobion Mobion is a free Avatar Mobile Community where you can chat, play games, share photos, receive daily horoscopes and meet friends!