Lifestreaming is the next step up for web 2.0. Most simply it is an aggregated view of your online and offline activities.  You can track what you listen to, your blog entries, your links,  twitter, what videos you are watching, what you are buying, what you are reading, your IM status as well as videocasts and podcasts.

One application that is getting a lot of buzz and has been called “The New Twitter”  is FriendFeed.  It allows two-way conversations via twitter as well as integration with Delicious,  Flickr, Amazon, Google Talk, Google Reader, LastFM, YouTube, Netflix (a company that rents movies by mail and has a rich Web 2.0 interface.) as well as many others.  FriendFeed has also created a Facebook application to embed into your profile and people can access your friend feed via RSS, email and through Facebook. You can take a look at my lifestream here.

Facebook is quickly jumping on the lifestream boat by adding auto-import feature from Flickr, Delicious and other applications into your mini-feed.

There are a number of other lifestreaming applications which you can read about here.