Google, watch out! There are signs that the social networking site Facebook could be the number one source of online news in the future.
News is one of the main reasons people use the microblogging site Twitter too, but Facebook is creeping up on Google, Yahoo! and msn as the most popular source of news traffic.
Researchers say it's down to the hundreds of millions of users Facebook already has.
The social network recently invited users to try out its "news lists", a new application that works like an RSS feed of lots of different online publications.
