Following its $1 billion purchase of photo-sharing app Instagram, and buy-out of facial recognition firm Face.com, Facebook’s acquisition spree continues with the company’s latest purchase of mobile-bookmarking service Spool. The financial details of this transaction remain undisclosed.  

The Spool service will not make it out of its current beta phase as it has now been shut down, with the firm recommending that users move all of their bookmarks to competing services such as Delicious. The Spool team will now become part of Facebook, assisting the social networking behemoth in the increasingly important area of mobile content consumption.  

“We started Spool to make content easy to consume on a mobile device. To accomplish this, we built some very sophisticated technology and developed a deep expertise in mobile software development. We firmly believe that solving these problems will be increasingly important as the world accesses the internet primarily through mobile devices,” a post read on the company’s official blog.

In related news, Facebook recently came under fire for unilaterally changing the email address shown on users’ profiles to one that points to their Facebook inbox.