Don't worry. I don't think most people would actually purchase a negative rated account anyway. Most sold accounts are fresh accounts with no markings on them.
Well we used the term "newbie" here so i don't think most of the newbie would know about trust thing and how it works.
I do not recommend newbies to buy accounts to signup for signature campaigns. You have to start at the bottom and read through many threads to get the feel of the forum. A lot of people rush into these campaigns, thinking they are going to make bags of money and then they end up getting their accounts banned.
Well most of newbies follow that practice of buying full member and start earning but so far as a newbie is posting up to thread's point no one can ban you.I think people need to learn the difference between "earning from posts" and "posting to earn".However most of the signarure campaigns has character limit set up .But there are still some campaigns especially the bot ones who still doesn't have that rule and continues to pay up for their spammers shit-posts.