"The worst Twitter quitter is the one who leaves without warning, <a href=""http://www.forbes.com/sites/markpasetsky/2011/04/04/why-james-franco-abruptly-left-twitter/"" target=""_blank"">like James Franco did in 2011</a>. After joining the site in February, just before hosting (and live-tweeting during) that year's Oscars, the actor abruptly dropped off with little explanation. Although he said in an interview at the time that ""social media is over. Still up there. Going down. You heard it here first,"" he eventually made his way back to the platform."