With meebo you can chat with all of your friends on AIM, Yahoo!, MSN, Google Talk, ICQ, and Jabber! Meebo supports file transfers between users too.
Meebo includes features such as invisible sign on this prevents others from knowing when a user connects and simultaneous connections to multiple IM services.
Meebo me widget! This allows users to embed a version of Meebo on their personal website. You can communicate with your site visitors, meebo me allows you to see the people who are visiting your web page and chat with them.
Meebo allows some people who are behind firewalled networks (networks that block the various instant messaging protocols but have not blocked the meebo.com domain name) to connect to instant messaging services due to the fact that the user connects to only port 443 (SSL) and the Meebo service itself then connects to the various instant messaging protocols.
Meebo also have “meebo Rooms”. Users of Meebo can connect to chat rooms or host their own for which multiple friends can join and chat. Meebo Rooms also grants a degree of control to the user with invite and ban authority. Classic Meebo was updated to reflect the release prior to Meebo Rooms to allow users with outdated browsers to continue to use meebo.
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Meebo also have Firefox add-on plug-in too, to help the firefox users to handle the meebo as an desktop application and also it helps users to login directly to meebo while firefox application is started. You can get this plug-in here…