Yes, I don't think a blacklist is a good idea, that seems far too negative. Unless someone is really abusive, but no one has been.
Also, no offense guys, but it really doesn't help for a bunch of people to jump on everyone who posts a suggestion being like "Um, can't you READ?" I think you should leave that to me and Spotty. And if you cannot possibly contain yourself, please try and make sure you're being nice about it. I usually say something like "Very sorry, but Spotty's not taking suggestions at the moment. Please make sure you read the first post and the topic of the post to check if it's open. Come back and suggest when it's open, and in the meantime feel free to use one of the already made puppies and spread the love

"