Google Transliteration has added 4 new languages including: Bengali, Gujarati, Marathi, Nepali. Previously it had Hindi,Tamil, Telugu, Kannada and Malayalam. Now lot of people from different regions in India can write in their native language using online Google Transliteration.
Since it is transliteration service and not translation service, you ought to know the native language. For example, type namaste (as in english) and hit the spacebar to see namaste written in hindi. Similarly you can perform transliteration in languages you are familiar with at Google Indic Transliteration.