I wish that was enough. The articles that show up here on HN from time to time make me think they can cross-reference data and fingerprint you through many data sources and more advanced tracking (things that we discover from time to time like canvas, css). People that have you on their contact list, your e-mails that hit their servers even when you don't have a Gmail, DNS, CDN, cloud services, your phone unless you go full tin foil hat, data they acquire from other companies. I try to protect my privacy but I think it's all futile, they have too much power.