Question: What presenter on the Full Irish radio breakfast show also was a pioneering member of the Twitterati? 
Context: Simon Lederman is a radio presenter in the UK.  He presents a Saturday morning breakfast show with JoAnne Good and the Simon Lederman Show on BBC Radio London Monday to Thursday 10pm-2am.  He is also a regular presenter of the weekday breakfast show behind Paul Ross, weekday Drivetime behind Eddie Nestor, and the weekday Vanessa Feltz phone-in on the same station.  He stands in for Robert as presenter of the Robert Elms programme and for many years he was also a regular contributor to the show, each week taking listeners on an audio bus tour of London, with Lederman describing the areas of London which specific London bus routes travelled through.  For this reason he gained two titles: "The Bus Biographer" and "The Route Master". The Full Irish was a radio breakfast show on RTÉ 2fm.  It ran for three years from 2002 - 2005 and was on air from 7 - 9 am.  Ryan Tubridy presented, though he wasn't the only voice to be heard.  Shane O'Donoghue read out the leading news in sport and Avril Hoare read out the news.  The "holy moley mug" was the main prize given out in competitions.  It was always a light hearted show which discussed random topics. Ian D. Dempsey (born 16 January 1961) is an Irish presenter of television and breakfast radio.  He is the long-running presenter of the breakfast show on Today FM, self-titled "The Ian Dempsey Breakfast Show", which runs from 7-9am each weekday.  He has won several major awards for his programmes and was Ireland's tenth most-listened-to broadcaster in 2007. The Rick & Ruth Breakfast Show was RTÉ 2fm's breakfast show which began after Ryan Tubridy's "The Full Irish" ended and ran until 26 September 2005.  Presented by Rick O'Shea and Ruth Scott, the show was axed after six months in August 2005 when it was blamed for losing "The Gerry Ryan Show" 40,000 listeners to Today FM's Ray D'Arcy.  The show was replaced by Marty Whelan who presented "Marty in the Morning" until his subsequent replacement by Colm & Jim-Jim who, until October 2010, presented "The Colm & Jim-Jim Breakfast Show".  Scott was moved to the weekday 16:00 - 18:00 slot, whilst O'Shea returned to the late night 22:00 - 00:00 shift he had previously occupied. A full breakfast is a breakfast meal that typically includes bacon, sausages, eggs, other cooked foods and a beverage such as coffee or tea.  It comes in different variants and is referred to by different names depending on the area; it is colloquially known as a “fry up” in all areas, however.  It is usually referred to as a "full English breakfast" in England (often shortened to "full English") and, therefore, as a "full Irish", "full Scottish", "full Welsh", and the "Ulster fry" in the Republic of Ireland, Scotland, Wales, and Northern Ireland, respectively.  It is especially popular in the British Isles, to the extent that many cafés and pubs offer the meal at any time of day as an "all-day breakfast".  It is also popular in other English-speaking countries, particularly countries that were a part of the British Empire.  Long-established in British culture, about a fifth of British tourists eat a full English breakfast while on holiday overseas. Hirsty's Daily Dose, also known as The Dose and The Capital Breakfast Show, was a British radio breakfast show, which aired on Capital Yorkshire for 11 years.  It was devised and presented by Stephanie Hirst with Danny Oakes and Joanne "JoJo" Kelly (née Moorhouse), most often referred to as Hirsty, Danny and JoJo. Neil Curran is a Northern Irish radio presenter on Blast106.  He was born on 17 April 1990 in Lagan Valley Hospital, Lisburn.  Currently Curran is a radio presenter on Blast106, "Belfast's most music station".  He presents the mid morning programme on Blast106, The Inbox on ABC100 and most recently the Breakfast show on Radio Lapland. Marty in the Morning was RTÉ 2fm's breakfast show, presented by Marty Whelan, from 26 September 2005 until it was axed when Colm & Jim-Jim joined from FM104.  The duo held the 2fm breakfast slot with "The Colm & Jim-Jim Breakfast Show" until the death of Gerry Ryan prompted a further change in the schedules in 2010.  "Marty in the Morning" was an attempt by 2fm to find an able successor to Ryan Tubridy who had left "The Full Irish" and defected to RTÉ Radio 1 in 2005.  However, in May 2006, it emerged that the show was receiving less listeners than its rival "The Ian Dempsey Breakfast Show" on Today FM.  Prior to this, Whelan's predecessors Rick O'Shea and Ruth Scott had Tubridy's replacement "The Rick & Ruth Breakfast Show" axed after it emerged the flagship "The Gerry Ryan Show" was losing 40,000 listeners to Today FM's "The Ray D'Arcy Show".  O'Shea and Scott were blamed for this and quickly disappeared off the morning airwaves.  Whelan too disappeared and has not been heard on 2fm since. Ryan Tubridy (born 28 May 1973), nicknamed "Tubs", is an Irish broadcaster, a presenter of live shows on radio and television in Ireland.  Tubridy is the highest-earning presenter on Raidió Teilifís Éireann (RTÉ).  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. Shane O'Donoghue is an Irish golf journalist who presents "Living Golf" on CNN.  From Clonmel, County Tipperary, Shane worked for RTÉ as a presenter, DJ and read the news on 2fm's "The Full Irish" morning/breakfast show.  A keen golfer, Shane has presented and contributed to shows for RTÉ and the BBC as part of their golf coverage, he has also worked for the European Tour World feed of its events.  Shane moved to the United States to work for CNN and has also worked for the Golf Channel and Fox.
Answer: Ryan Tubridy