On Privacy
PRIVATE SPENDING
PRIVATE RECEIVING ADDRESS BOT
DECENTRALIZED SOCIAL MEDIA
The possibility to be anonymous or pseudonymous relies on you not revealing any identifying information about yourself in connection with the bitcoin addresses you use. If you post your bitcoin address on the web, then you're associating that address and any transactions with it with the name you posted under. If you posted under a handle that you haven't associated with your real identity, then you're still pseudonymous.
~ Satoshi Nakamoto 2009-11-25
For greater privacy, it's best to use bitcoin addresses only once. You can change addresses as often as you want.
~ Satoshi Nakamoto 2009-11-25