How can one remain relatively anonymous while using Bitcoin? Bitcoin transactions are pseudo-anonymous. What can an individual that uses Bitcoin do in order to remain as anonymous as possible?
Don't publicly disclose any address in your wallet, or associate any address with your true identity.
Use currency exchanges to break the 'money trail' of bitcoin addresses associated with you.*
Use anonymizing services such as TOR when conducting business.
Break up your transactions between online and offline (person to person) transactions.
Buy bitcoins for cash.
Mine bitcoins yourself either directly (solo), or with pools such as Eligius that do not require registration.


*If you transfer bitcoins into a large currency exchange or other large private repository of bitcoins, then pay bitcoin back out to a new address that is not associated with you it is difficult (without a warrant) to track the bitcoins.