During the f8 Developers Conference, Facebook CEO Mark Zuckerberg announced Timeline to replace Profile and Wall.  The new functionality will enable users to have more control over what they have published on their account from inception to date. “Timeline is a completely new aesthetic for Facebook,” says Zuckerberg.  And it will also be available on mobile devices.

For instance, you want to find a particular post you’ve typed back in 2005, you’ll be able to find it without clicking the ‘Older Posts’ hyperlink over and over for God knows how long. With Timeline, you can simply filter your search to instantly scroll down. It’s going to be very fast, by the way.

Which raises an important question for mobile users, as Facebook boasts 350 million in its network.  How will this media-intensive Timeline feature work on data-hungry mobile devices?  Facebook was smart enough to think about a mobile interface right from the beginning.  And it looks like they were smart enough to consider the burden of data as well.  According to Joey Flynn, one of Facebook’s product designers, the challenge about Timeline is to show users interesting content without overloading data subscriptions.

“What we do with mobile is that we put as much on the page as possible, but collapse most of the things on the back end,” Flynn said. “So you can look at someone’s timeline on mobile and it’s pretty cool.”

During f8, Facebook proudly announced the traction for the its mobile app, reaching a major milestone of 350 million monthly active mobile users from a total of 800 monthly active users. This can also be translated to 43.75 percent of its total users. It’s likely to pass the 50 percent mark before it hits the billion mark.

And that’s quite a feat as far as the mobile social networking scene goes.  Expected to reach 550 million users by the end of 2011, mobile social networking activity is becoming more active than PC activity.  Analysts predict that mobile social networking will reach nearly 2 billion by 2016, indicating a lot of mobile interest for the future.

Despite revealing some awesome features at f8, its steady belief in the importance of mobile, and further plans of encouraging people to use Facebook to consume media, the social network didn’t provide any specific mobile strategy during the conference, despite its big talk and boastful stats.