What presenter on the Full Irish radio breakfast show also was a pioneering member of the Twitterati? 
The Full Irish: The Full Irish was a radio breakfast show on RTÉ 2fm. Ryan Tubridy:  Current host of long-running TV chat programme "The Late Late Show" and a weekday morning radio show called "The Ryan Tubridy Show", Tubridy was a pioneering member of the Twitterati before he departed in August 2011.
i don't know