Does my voting from this 2nd acc, which has no vote value, help in any way? Does number of votes matter?

Not really. I think it's not worth the effort to spread the SP among different own accounts ;)

Thanks for the recipe! I'm already brushing my teeth with pure baking soda and have better results with it than with commercial tooth pastes. Never tried to use cayenne pepper for that, but I will give it a try. We only use himalayan salt at home anyway, so that should work.