Impact Factor: 3.1 (UIF) DRJI Value: 5.9 (B+)

Chatting is one of the most frequent internet activities. It has become a popular way to communicate. In fact, all major organizations also provide customer service through messages system. Social networking sites like facebook, twitter, yahoo, provides chat services and attaching billions of users worldwide. This gave me a motivation to develop a chat system for social communication, this work consists of planning & developing a chatting system. In a chat system, an increase of the participants leads to confusion of topics and makes it difficult to continue an orderly conversation. Moreover, senior participants tend to be familiar with each other and form a so-called community. This behavior of the senior users consequently makes newcomers hard to participate in the existing rooms. To cope with these problems, this paper proposes a community partition based chat system which divides overcrowded rooms to keep the proper number of participants. The system frequently estimates relationship between participants and separates the community members from the chat room. The separated members thus can continue to communicate with each other in another room newly generated, while the remained participants unacquainted with each other can make a beginning of the conversation. We had made an evaluation experiment on the proposed chat system and could obtain results which agree with the aim of our research. Online chat may refer to any kind of communication overthe Internet that offers a real-time transmission of text messages from sender to receiver. Chat messages are generally short in order to enable other participants to respond quickly. Thereby