follow @greenwichcouncl on Twitter. It's a really active account. Already 2,027 people are doing it! They are promoting on Twitter the GreenwichCard, which gives exclusive opportunities for owners to get hold of tickets for this year's hottest events at the O2 complex. On the rosta at the moment is Barry Manilow, The Royal Philharmonic and a 20% reduction in full ticket prices to see Titanic: The Artefact exhibition.