What actually is the mixer means? As i haven't heard this before so i came to this thread but after reading all post i can't get any clue about what the mixer is actually. If anybody don't mind to explain me can you?
Mixer is essentially this
1) You send bitcoins to an address(from the bitcoin mixer service)
2) After the payment is recieved in the address, the service sends you your btc to your 2nd address through a completely random address.
Of course this is just the simplified version of it, most mixer noawadays provide many customizations for added privacy. As as you can probably guess, people do it to hide their tracks that people can track through their transactions.