"bro", you can use darksend and mixing services as long as you want to,
if you typ-in the adresses where your money is in the end,
all the obfuscation is gone.
Yep, addresses from exchanges are particularly obvious.
But merchant addresses are as well.
If you want anonymity, use the qt wallet exclusively, and only send/receive to/from people with the qt walllet.
Only communicate your addresses through physical means (paper), never via email or IRC.
Also even with the qt-wallet, be aware that your IP could be traced as your client will be the first that will know of your transactions (for obvious reasons), and careful timing of transaction propagation can be used to pinpoint you.
Finally never forget that exchanges have not just your email, but your whole trade and IP history as well.