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No that query was posted on an old post.

When we announced our services, our blogs show what our terms are. The FAQ indicate what our terms are even though they are not specifically wrapped in a TOS header, they are still conditions shown on our website. We can amend that to make it more clear.

Again if users aren't happy with it they can remove their posting keys but we don't see anyone doing that, we have been receiving mostly new signups.

I think these events have shown that before signing up, the person owning the account must agree to simple TOS message including a mention that participating accounts will upvote 7 posts per week, but these votes may not be made evenly throughout the (defined) one week period. This seems to be the source of the controversy, and if it's made less ambiguous when someone signs up to use the service, there is less potential for controversy.

As for current users, who may not understand your terms because there were no terms presented on signup (forgive me if I'm wrong, I don't use the service), here's one suggestion on reducing confusion: Send a 0.001 STEEM transfer to all active Steemvoter users with a memo/brief message linking to a post that explicitly states the terms of the service. This way you can make a reasonable effort at clarifying terms for all existing users.

They collect email address so may easily contact the users. And I am confirmed that there is no TOS message on signup or adding account.

Sure, we can send out a reminder of our terms of service, but if the hope is that people will unsubscribe,we don't envisage many will.

They also retain keys to accounts that are not even still online.

I unsubscribed from your service not because of the change in terms but because there was no communication of the change in terms. ie. No effort to contact users and ensure satisfaction with altered terms.

This made me consider whether I should trust you with my voting keys.

No matter all the rest, you should immediately add to your FAQ that you "may change the rules/terms of service at any time". Change nothing else in there. Just add this disclaimer.

Then the discussion can and should continue from there.

I am not sure whether they changed TOS. Can you confirm?
If so, where is a blog post about changing TOS? @steemvoter

I never took a screenshot of the original TOS / FAQ but I did email to ask when I noticed they voted twice in one day.