http://7drcqi7ae2v37ten6glnvoii7tgfm3dzolnnafgzh5gonfhil6xfpkyd.onion
That anonymity is easily destroyed when you deal with some party that
knows your real identity, for example if you sell or buy bitcoins on an
exchange. And with more and more exchanges and other services following AML and
KYC policies, its getting really hard to stay anonymous to government
agencys when dealing with bitcoins.