Microsoft has released a machine translation text engine via their Live service. To quote them directly:
"Recent research in Machine Translation (MT) has focused on data-driven systems. Such systems are self-customizing in the sense that they can learn the translations of terminology and even stylistic phrasing from already translated materials. Microsoft Research MT (MSR-MT) system is such a data-driven system, and it has been customized to translate Microsoft technical materials through the automatic processing of hundreds of thousands of sentences from Microsoft product documentation and support articles, together with their corresponding translations."
In English, the more this system is used the more it learns. This is not a drastic departure from how the Systran system works (this is the system used by Google and Altavista) but it was developed in-house. It will be interesting to note the differences in a comparison of systems over time.