This is incredible and fast, is it because of Facebook acqusition or behind of the Ins

Well, that was fast. Almost a year after announcing that it had 27 million users, Instagram has surpassed the 100-million-user miletsone, according to the company’s blog. Over the last year, Instagram has continued to refine its already polished app, adding new filters and a Web feed for viewing photos in a browser rather than on a mobile device.