content: doesn't get sent to ad companies.  The idea is that you DO send your personal info to them so it poisons the data pool they have on you. It's certainly effective for the foreseeable future to poison the data pools, force companies to spend extra money on ads and get less back, and similarly devalue google and other ad companies' quality of product. and once the diminishing returns kick in, you can go back to blocking everything. you're simply wrong in your current stance if you have never ran adnauseum or trackmenot for a period of time. again, you stand to make large gains from the start while they diminish over time; how long the gains last no one knows, but you do know that you're doing massive damage at the beginning.