Shapeshift now requires email registration to trade. Correlating trades now becomes trivial for them, or we need to keep at least 2 emails for this purpose (BTC -> XMR and XMR ->BTC transactions). And, they impose an endless ReCaptcha. And they include Google trackers anyway. And JS of course.
localbitcoins requires ID verification once the user reaches a certain volume (not a very high volume: about 20 trades or 2 BTC a year).
Poloniex moved to ID verification long ago, even for crypto only trades.
The purpose of this topic isn’t to argue for or against cryptocurrencies in general. Please refrain. It is to share ideas, tools and possible solutions how to maximize anonymity, within the limitations.
I will sincerely appreciate feedback on those lines.