Have you used Google's Indic transliteration? Google has taken transliteration from here and put it on its search box. And that makes a much pleasant search experience since finding regional language content is very simple. We don't even have to type the search query in the regional language.
Set your Google interface language to Tamil and search for [vairamuthu], you'd get a result page like this:
It works for all Indic languages. Here's a screenshot of the Hindi interface: