In an interview with Mashable's Ben Parr, Twitter CEO Dick Costolo shared some interesting statistics. He said that iOS 5 has caused a massive spike in signups for the social network.
According to Costolo, signups via iOS have tripled since iOS 5 was made available to iPhone, iPad and iPod touch users last Wednesday. Add in the hugely successful iPhone 4S launch on Friday, and you have a lot of people plugging their Twitter credentials right into iOS...