We all also can cummunicate in hindi on blogs. Please ckick below link and save it too. You can type with english alphabets and this google tool will convert your msg to hindi.
http://www.google.com/transliterate/
For example if I type > "Anna Ji jindabad". Software tool will convert it to "अन्ना जी जिंदाबाद".
Please remember to put space after each word to convert it to hindi. And then use copy/paste command to use those hindi words anywhere.