That’s according to a post from Jacob Harris on Open, NYTimes.com’s developers’ blog. Harris explains the process behind counting the number of links shared – including how shortened URLs are dealt with – when taking a few hours’ worth of tweets from a Monday afternoon.
The data ranged from a minimum of 4 to a maximum of 57 (that is, from once every 15 seconds to almost once a second), as the following chart of minute-by-minute counts demonstrates.