They were never really enforced so it's largely useless until they are.
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Assuming you know who's responsible for the campaign.
Any forum rules regarding campaigns - whether it's the OP's "minimum wage" or what you're suggesting - can work only if the forum controls all signatures, i.e. instead of being able to enter custom bbcode users would have to choose from a list of "approved" campaigns and that way you can tie them to managers etc. That obviously creates problems for everyone who just wants a personal unpaid signature.
The best way would just be to blacklist the problem signatures like they were in Yobit's case.
Yes, some have a life outside this forum. I do as well, but I login every day. I even have to take a laptop with me on vacations with my family to ensure that campaigns are paid out even if I am out of town. God forbid I'm late paying everyone. Everyone is not me, I get that but you cannot tell me that making 3 or less posts in a day is a rough task to do. Honestly takes users less than 20 minutes of being online to do so.
Not me..
I just went on 2 small vacations and didn't touch my laptop for 3 days each.. No way I am posting from the Holiday Inn when I could be enjoying a drink with fine company, to make my quota of posts, to make only a few dollars a week..
Being a signature campaign manager is different. You can't stop paying users just because you go on vacation. On the flipside, you can also look at it as being something you can get paid for from anywhere in the world. I know I'd much rather be sat next to a beach/pool and earning money than sit in front on my PC at home doing the same.
Isn't it better to just hire more people? Enforcing minimum weekly post counts probably has a negative effect on post quality if people know they *have* to post enough or they'll be kicked out of the campaign.
But who does the hiring? The board hires more people or the campaigns? With the latter the issue is they're greedy and/or lazy and they are usually always understaffed or overworked here (if they even have a dedicated manager here in the first place) and want to get the 'hob' done with minimal work or expense to them and hiring more people is often an expense they can avoid, but that's why there needs to be repercussions for the problem campaigns that do little to nothing.