"Read It Later (the company name stays the same even though the app name has been changed to Pocket) has 4.5 million users and says YouTube is its apps’ most popular source of content (YouTube is also the company’s most-saved domain across platforms). Forty percent of items saved aren’t articles but content like videos, images, things to buy, travel tips and recipes. Fifty percent of items saved through the app are viewed on mobile screens, up from 34 percent in January. And 33 percent of saved items come from third-party apps like Twitter, Zite, Flipboard and Pulse."

They're also changing the price of the app to free.

Source: http://paidcontent.org/2012/04/17/read-it-laters-app-goes-free-and-gets-a-new-name-pocket/

"Over the past five years, Pocket users have saved over 200 million items. Weiner adds that nearly five items every second are saved to Pocket from the web and apps."

Source: http://techcrunch.com/2012/04/17/read-it-later-rebrands-as-free-app-pocket-updates-ui-with-filters-favorites-and-more/

Liz Gannes says Read It Later Pocket users stash 400,000 times a day.

Source: http://allthingsd.com/20120417/read-it-later-trades-in-its-literal-name-for-the-more-open-ended-pocket/