Facebook has acquired the developers behind the customer-loyalty and rewards application Tagtile. The social network has also started rolling out offers tailored to users.

"We're happy to confirm that Tagtile's founders are joining Facebook, and that Facebook is acquiring substantially all of the company's assets. We've admired the engineering team's efforts for some time now and we're excited to have them join Facebook" Facebook said in an e-mailed statement to Bloomberg.

Bloomberg said the acquisition was ahead of the expected Initial Public Offering later this year, speculated to be during May. Facebook had acquired photo-sharing service Instagram for $1 billion. The deal was announced earlier this week.

Facebook is expecting to raise $5 billion from the IPO. According to Bloomberg, people "familiar with the matter" estimated Facebook would be valued up to $100 billion.

"We won't be taking on any new customers as of today, but the service will continue to work as if for now," Tagtile said in a statement on its Web site.

Meanwhile, Facebook has rolled out the Facebook Offers service. In beta, the service was originally revealed in its marketing conference at the beginning of March. Local businesses can use the service to promote themselves to users, sending free items and promotions to news feeds. If someone clicks on the offer, it can be redeemed through Facebook's mobile apps or in a store by receiving offers via e-mail.

The offers are free to create, though Facebook continues to runs its own ads with the offers only reaching a limited number of users, in an attempt to combat other offer services such as Groupon and LivingSocial. This isn't the first time Facebook has attempted to roll out offers, though: Facebook Deals was closed in August last year.

The rollout isn't global, Facebook said.

"Facebook rolled out Offers in beta to a handful of clients in the U.S. after announcing it at fMC in February. Facebook is continuing to roll out the beta to a limited amount of businesses in Singapore, Australia, New Zealand, Japan, and Turkey, but it's not a global roll out. It's not yet available to additional U.S. businesses," the company said in a statement to The Verge.

(edited by Jonathan Charles, edited by Dave Clark)