While tweeting is used to break super-injunctions, launch products and trade insults, let's not forget the friendly upbeat side to it which is behind its popularity.
Irish media stars such as Miriam O'Callaghan and Rosanna Davison regularly post cheery and funny tweets. A recent post from Rosanna read, "Anatidaephobia is the fear there is a duck watching you."
Where would Jedward's half a million followers be without their regular updates from the Eurovision-bound twins?
Sports fans get a feeling of having the inside scoop from sports people who tweet, such as Leinster rugby player Jamie Heaslip.