I'm still not us­ing twit­ter. So I'm cer­tain­ly not tweet­ing to hard. On IRC you know the oth­er guys are prob­a­bly in their base­ment us­ing their com­put­er so that's the con­text to in­ter­pret their at­tempts at be­ing fun­ny, so most of the times it works. On twit­ter you don't know if it's that con­text or some douchebag se­ri­ous­ly tweet­ing us­ing his iPhone from his yacht. That can't be fun­ny.