The spreadsheet below captures the acquisition date, dollar amounts, and ballpark counts of the users and employees at the time of acquisition. Be warned: Any of these numbers are very rough, cobbled together from Internet Archive searches, old news articles, Quora answers, and tech blogs. A startup is acquired for any combination of the technology, talent, or the user base.
Complete Article by Andy Baio
Instagram’s Buyout: No Bubble to See Here http://www.wired.com/epicenter/2012/04/opinion-baio-instagram-trend/