Google has added some translation bots to Google Talk, giving users the ability to translate languages, or when using a portable device have a pocket translator. The current languages, of which there are 24 include ar2en, de2en, de2fr, el2en, en2ar, en2de, en2el, en2es, en2fr, en2it, en2ja, en2ko, en2nl, en2ru, en2zh, es2en, fr2de, fr2en, it2en, ja2en, ko2en, nl2en, ru2en, zh2en. To use the translation bot simply send a message to “[from language]2[to language]@bot.talk.google.com.” So for example to translate from English to French you would send the message to email@example.com.
While a very cool feature, and one that seems like it would come in very handy while using Google Talk on a portable device, Google does warn that the translation bots are a “20%” project, which means that while useful the language translation will not be perfect.
In addition to the translation bots, Google also encourages users to build their own bots that can be used. Google Talk uses XMPP, an open protocol which means you could build anything from a weather service to a rock/paper/scissors game.
Read [Google Talkabout]