Display a chat-box toolbar on the bottom of your website, to allow logged in users can send text messages to each other.  You can choose whether a user can chat with any members of the site, or just other users that they've added as friends. 

CometChat boasts 100s of features to increase interactivity. You can learn more at: http://cometchat.com

NOTE:

In order to provide our customers with a consistent and streamlined support resolution process, please use our ticketing system for support issues:

http://www.cometchat.com/tickets

For Support, please email us at support (AT) cometchat.com

For Sales, please email us at sales (AT) cometchat.com