text: how is meebo.com able to communicate with yahoo chat servers? is there any specification by yahoo for developers to connect to their yahoo servers.any resource.plz suggest.how third party messengers connect to known chat servers...like trillion etc.. some im providers release their apis (application programming interfaces) to the public so that programmers can develop for them; others have been reverse engineered by enterprising geeks. look around the web and you should find information for the one you're interested in.