Heres this thread explaining a little about some rules your company needs to pay attention to. Failure to keep an eye on your participants could lead to your campaign being removed by the forum. https://bitcointalk.org/index.php?topic=1684035.0
Here is a thread that you can use as a reference on whom is considered a spammer by the SMAS team( myself, Lauda, and Lutpin). I hope this help you with your decisions on whom to hire. https://bitcointalksearch.org/topic/my-sig-spammers-list-and-banned-from-campaigns-list-1661654
Thank you for the link, we're checking it right now.
We'll write even bigger thant now that spam is not tolerated, nor counted, in our signature campaign contest.
We're ready to remove from the applicants who fails to follow the rule, as stated in the OP. Please let us know (or our manager Lucky80) if someone spam.