It may seem like not much has changed but that is due to the campaign having over 190 members.
I have removed several members recently due to their posts, it'll continue until you see a difference.
I haven't noticed anyone that was doing crazy amounts of posts get kicked. Although I wonder why bans are less frequent now? Remember back with PD people were getting banned in 'waves'.
Campaigns should probably be limited or capped at something because at one point it becomes overkill and hard to manage. I've been reporting users to marco and he has been kicking most of them off but he and other campaign managers should be doing more to stop spam from happening in the first place or quickly put a stop to it when it happens. Having nearly 200 people on your campaign is impossible to police effectively so you should either cap it to an amount that you can handle or hire someone who will keep an eye on posters. It's in your interest to get on top of things because there wont be any campaigns to manage if this keeps up not to mention having spam participants on your campaign makes both you and the business look bad. I think bit-x has achieved its goal of having its brand spread across the forum and has enough advertisers now and definitely doesn't need any more. It's probably time to have a clean out and only accept new users after you've checked the quality of their posts. If every campaign manager checked the user's posts first before they're accepted poor quality posters would have nowhere to go and be forced to up their game or be outcast.