Yahoo has acquired social browsing startup Rockmelt in a deal worth up to $70m

The acquisition is expected to strengthen its mobile and social networking efforts.

Once the deal is completed, Yahoo will shut down the Rockmelt in 30 days and incorporate the technology into its media platform to "deliver content in new ways."

Rockmelt said in a statement that it shares Yahoo’s goal to help people discover the best content from around the web.

"We plan to put everything we’ve learned to work at Yahoo," the firm added.

Yahoo will also retain 32 employees from Rockmelt as part of the deal, including CEO Eric Vishria, who will now be VP of products for Yahoo’s media properties, while Rockmelt CTO Tim Howes will serve as VP of engineering for Yahoo mobile products.

Launched in 2010, Rockmelt’s web browser incorporated social networking features within the browser, which enabled users to send Facebook messages and surf postings on Twitter.

It is Yahoo’s 21st acquisition under CEO Marissa Mayer.