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GillMack has a very valid point, which I can really appreciate, and I have thought about not putting it on here, but at the moment the choice of sites on which to advertise is limited, so to get the most sales for the cause I need to use this and others.
Of course the other point to mention is, that although I request no asking I am fully aware that I cannot enforce it, and they do still get asked, no matter what, and on other sites too, but it does help a bit.
As pulse has pointed out, and I was going to but decided that it was probably best left with Sirprizes comment, there are equally, possibly more, quizzers who prefer to struggle getting answers themselves and send entries in partially completed and takle a chance on winning, than those who must share answers to complete it, so it possibly does not reduce sales.
I personally have stopped several that I did purely for that reason, too many answers shown here so there was no chance of even coming close to winning with gaps in the answers.
But, enough said I will see how I feel next time and make some decision.