Say I decide to buy a new set of speakers. Do I tweet that I'm looking for speakers? Do I announce on facebook that I'm looking for speakers? Or do I just st

Say I decide to buy a new set of speakers. Do I tweet that I'm looking for speakers? Do I announce on facebook that I'm looking for speakers? Or do I just start googling? Twitter and Facebook might occasionally be clued in about some of my purchases, but google is in on virtually all of my purchases that are considered while I'm at a computer. They're first past the post and privy to a much higher percentage of what I buy.