The US Chamber's extreme position on climate has been drawing fire for a long time, and dissatisfaction with the US Chamber is growing as more and more businesses say that the Chamber doesn't represent them on climate and other issues.
American Rights at Work has launched a "Not My Chamber" site where business owners that object to the US Chamber's position on climate, health reform, swine-flu sick leave and other issues. ARW reports that 3,102 business owners have signed the pledge, as well as over 20,000 individuals.
AFL-CIO has a blog post with lots of suggestions for getting involved.