You can navigate the timelines via the arrows at the bottom of the screen or by clicking anywhere on the timeline and scrolling left to go back in time or forward for the future.
Example timeline: History of Blogging
Another example: Fred Lippert and Family
http://dandelife.com is well-known for its TimeLine feature that displays your stories and online activities chronological order. It looks something like this:
You can view your friends’ network streams as well.Here are three screencasts that show more of Dandelife’s features: http://dandelife.com/demos