Buycott helps you to organize your everyday consumer spending so you can fund causes you support and avoid funding those you disagree with.
Example: During the SOPA/PIPA debate in 2012, a number of companies pushed to pass legislation that reduced online freedom of expression, while other companies fought hard to oppose the legislation. With Buycott, a campaign can be quickly created around a cause, with the goal of targeting companies with a boycott unless they change their position, or buycotting a company to show your support.
When you use Buycott to scan a product, it will look up the product, determine what brand it belongs to, and figure out what company owns that brand (and who owns that company, ad infinitum). It will then cross-check the product owners against the companies and brands included in the campaigns you've joined, in order to tell you if the scanned product conflicts with one of your campaign commitments.