I think there is no reason to worry too much, as far as I can see the campaign is looking for a total of 16 members which is a totally insignificant number when compared to what had the largest spam campaign with over 600 members producing thousands of spam posts per day.

For a good poster, it's no problem to open 5 threads every week - but given the pay rates, such will not apply to the campaign. For anyone who is afraid of spam, report it to moderators, and I personally think this campaign will last for a very short time.