That's a great idea. But what would we put on there? To my knowledge there aren't nearly as many information sources available for PoliSci as for Econ (like field rankings or so).
What I find interesting (in a frightening way though, because they are clearly counterproductive) are the rumor blogs about the political science job market. There you can at least get some sort of idea what departments are currently hiring in what fields.
http://wikihost.org/wikis/polsci0607/wiki/start
http://americanandcomparativejobs.blogspot.com/
http://irrumormill.blogspot.com/2006...formation.html