Yahoo! has extended integration with Facebook, which will enable users to share content across the web and stay in touch with others.

According to Yahoo!, its Facebook Connect integration will allow users of its homepage, news, mail and other sites to connect with others on the Facebook, view feeds of activities on Yahoo! and share content such as photos from Flickr or comments on news stories.

Jim Stoneham, vice president of communities for Yahoo!, said: “With this integration, we are opening the door for two of the internet’s largest online communities to make it easier for people to stay connected. It also enables us to further the Yahoo! open strategy, which is aimed at making experiences dramatically more open, social and personally relevant for the more than 500m people that visit Yahoo! each month.”

The partnership enables Facebook users to access their stream and update their status from the Yahoo! Homepage; provides Share on Facebook options across the Yahoo! network and allows Facebook to access Yahoo! Contacts.

Yahoo! said that users of both Yahoo! and Facebook will soon be able to share updates across both networks, creating more relevant social experience by connecting a range of Yahoo! content and services with others on Facebook.

Ethan Beard, director of Facebook Developer Network, said: “As one of the largest sites on the web, Yahoo! is an ideal partner to integrate with Facebook Connect, enabling users to share meaningful content with their friends on Facebook from Yahoo’s wide range of category-leading properties.”

Integration is expected to begin in the first half of 2010.