Aletheo Wallet v0.2.5.5
After you specify rewards address, works purely in the background, so you do not need to anyhow "use" it, just post as you normally would.
Security is not yet a priority, it's in very early development stage, do not use generated wallet instances for anything, most especially storing your tokens/ether.
Use at your own risk.
For the most paranoid cases: use clean instance of firefox without any private info, if firefox is your default browser, install nightly, quantum, or whatever other firefox you can find.