There are 24 posts containing this reference code (together with your OP) >
the search resultsI guess they can be reported as ref. links and deleted but noting more can be done.
Yeah indeed, I thought so.
Now, I'll keep an eye on these accounts in the next couple of months, in case they eventually decide to join a campaign.
I'm sure this person has created a shitload of accounts, just to either spam his referral link, bump his topics and/or participate in campaigns.
Maybe @LoyceV can make a list with everyone who posted in the thread to keep a better overview of the accounts.
Other thing to check is the registration date of the accounts and the post history, often happens that those accounts post in same threads, creating fake conversations.