It is when (a) that data collection takes up a significant amount of bandwidth whenever I visit your website, and (b) I don't trust that that data collection re

It is when (a) that data collection takes up a significant amount of bandwidth whenever I visit your website, and (b) I don't trust that that data collection really is as anonymous as the website says (or even thinks). The major players here are explicitly not anonymous, they are designed to keep track of people over time so that they can collate habits and preferences across different sites to better target advertising. Yes, your AB test script isn't doing the same thing, but is it really adding any value to be as a consumer, or is it just optimising an extra 0.01% revenue for you?