Twittering
Flickring
This is a free theme for Tumblr that easily integrates Twitter updates, recent Flickr photos, Last.fm playlists, etc. And the Lord spake unto him, "Thou shalt centralize thy web presence." Look it up.
Following
Listening
To laugh, or to cry?
Comments
Here you can embed a comment system of your choice, such as Disqus or Haloscan. By default, comments will only be enabled on posts tagged enablecomments. More information here.