• http://www.wired.com/politics/onlinerights/news/2007/08/wiki_tracker

There have been several recent attempts to use more advanced statistical analysis to judge the reliability of articles within Wikipedia.

The first is a color-coding scheme that gives the reader an idea of the reliability of parts of the article based on the number of times it has been revised. The basic idea is that if a certain section is constantly being revised, it's less reliable than a piece that has been virtually unchanged for a long period of time.

http://mashable.com/2007/08/08/wikipedia-color-coding/

Another project also uses color-coding to represent reliability but uses the reputation of the authors as the determining factor.

http://trust.cse.ucsc.edu/

 A third matches the IP address of contributors to the content of the article to highlight clear bias.

http://www.wired.com/politics/onlinerights/news/2007/08/wiki_tracker

Reliability has been a question for Web 2.0 sites from the beginning. The initial measures, when provided at all, were generally based on the popularity of the content. Users would vote (Digg) or the number of links to the content were counted (Technorati). As more and more people begin using social networks as their source of information, statistical analysis becomes more important and more accurate at the same time.