Metropho.rs is a geographic metaphor map that plots "X is the Y of Z" tweets by putting the "Y" label on the "X" location. Some nice coverage by the Atlantic Cities blog here. [more inside]
posted by creade on Jan 5, 2013 - 3 comments

Filling a place between the Like Button and article comments, ReadrBoard is a bookmarklet that makes it easy to "react" to quotes, images, and video on a page. Run the bookmarklet (or embed the javascript if you are a publisher) on any website, select what interests you, and then click a button or add a tag. User profiles are auto-generated, showing a stream of what you've rated all across the web, capturing how readers feel about the pieces of content that grab them most. The goal is to help readers & publishers identify what online content people care about, and why. [more inside]
posted by bastionofsanity on Jun 5, 2012 - 6 comments

Twittov generates nonsense from your Twitter history using Markov chains. Note: Your tweets must be public for it to work. I posted this as a python script a year ago, but it's totally rewritten for the new Twitter API and has a Django/jQuery interface.
posted by yaymukund on Jan 30, 2011 - 9 comments