One of the problems of using a variety of online services is how do your friends keeping track of what you are doing.
Facebook solves this, for people that haven't discovered RSS, in it's News Feed feature. However, I'd much rather read in the comfort of my familiar
RSS reader than on Facebook. This is where
FriendFeed comes in.
FriendFeed aggregates the feeds from all the services you use. Short-form updates from
Twitter, long form updates from your
blog, favourite tracks from
Last.FM, shared links on
del.icio.us are all combined into a single feed. Users can choose to read the feed on FriendFeed.com or can subscribe to the aggregated feed in their RSS reader. As long as you keep your services in FriendFeed up-to-date, your friends will only ever need to subscribe to 1 feed for all of your online activity.
Give it a try. You can find my feed
here.