Hey,
would you mind responding to Darkstars questions please? Some very valid points and important. Thank you!
Of course, we are ready to answer constructive questions about our service.

We are not going to enter into a discussion with forum users who represent our competitors, such as Chipmixer and others. 99% of mixers also have POST requests, but why didnt they receive a negative trust? Most likely because competitors do not like our idea of giving private keys to users.

If someone doubts the work of Sudoku Wallet, then they can try to use it and provide evidence that it does not work or is a scam (it is unlikely that this will work, because the service is working and the number of users has been growing since launch).

A detailed guide is available at:
How to mix Bitcoins?Stay tuned!
My issue isn't with POST requests. The issue is that you claim to have no database, and yet refuse to:
Post the algorithm you use to convert the proprietary wallet key into a WIF key. I've reworded my trust feedback to reflect that you no longer advertise yourself as a wallet.
Should be a very simple task (you can post uncommented code if you like) as it proves that you're simply using POST requests to calculate private keys on the server side to avoid JS. You can attack me based on who I'm paid to advertise (though my opinions are my own, and I've praised other mixers in the past), but at least debunk my claim. I'm sure that's more effective than attacking character.
ChipMixer claims "No Accounts, no bitcodes".
CryptoMixer claims "Apart from that, we regularly delete all details of your transactions, including incoming Bitcoin addresses." (aka we have a database, but it's temporary)
Blender.io claims "The Blender.io service does not keep any information about processed transactions. All related data is erased after all coins are dispatched to target addresses."
BitMixBiz claims "We request a minimum of necessary information, and never store any logs".
No one claims to have absolutely no database, besides you. Don't get me wrong here: having no database is great! Innovation is always cool to see. However, at the moment, I strongly believe that you are lying and actually do have a database.