Pinterest IPO'd this week, so I thought it would be a good opportunity to compare it to its peers in the space (Digital media? Social network? You decide!). Twitter is, of course, the old dog of the group, having launched in 2006 and IPO'd in 2013. Snap sprouted around the same time as Twitter's IPO, in 2012, and IPO'd in 2017. Pinterest falls somewhere in the middle, having launched in 2010 but taking the now-popular long path, to the public markets.