[dmix]

The network doesn't automatically obfuscate transactions, but it's easy to do using tumbling services.

[finnw]

If the FBI were following a trail involving my wallet, I would also want to avoid being linked to the tumbling services.

[jlgreco]

I suppose the question is how recognizable are tumbling services? Do they create new wallets regularly, and does the resulting traffic leave a fuzzy line between what is "in" the service and what is "out"? It could be that using a tumbling service looks fairly similar to giving money to somebody/somebodies who themselves uses the service.