Facebook appears to have acquired the staff at mobile bookmarking specialist Spool.

The social networking giant did not comment on whether it was acquiring the company and its technology or only hiring its team.

"The Spool team has deep expertise in mobile software development and a passion for making content easy to consume," Facebook said in a statement over the weekend. "We're excited for the team to join and accelerate their vision at Facebook."

Spool has informed users that the service was closed down, and advised them to move their bookmarks to their computer or device browser or to another service.

Spool allowed users to create and share a read later list, save videos to watch later, or move content between devices.

"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," Spool said in a blog post. "We are proud to announce that today we will be pursuing our vision as a part of Facebook," it added.

San Francisco-based Spool in  raised $1m in funding in January this year from SV Angel, Felicis Ventures, Charles River Ventures and others.