the International Labor Rights Forum, in conjunction with the Not For Sale Campaign has posted a new website, Free2Work, grading a variety of corporations on their labor practices and social responsibility. beyond simple letter grades, the site lets the viewer know what each company is doing both proactively and passively to further, make public, ignore or justify their labor practices. you can search the site by goods/services manufactured or by company. The Gap, Apple/Mac and others are currently posted, with more on the way.
You can also follow Free2Work on Twitter at http://www.twitter.com/Free_2_Work