..and to think that user is senior member with good merit and activity, has he lost his mind ??
The irony of participants applying
voluntarily for the campaign after reading all the details and then being "forced" to post in a certain board or comment on topics that he/she is not familiar with

It may be the money that is forcing participants and not the campaign.
Campaign is giving money so in sense it's campaign

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The only way to address this problem is to put pressure on campaign managers to not require posts in specific sections.
Or may be give preference to quality.