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On the other hand, I really believe that Signature Campaigns did good to the quality of Posts. While I see many Members simply being echo chambers of other Members, there are many who write constructive ideas and Posts.
There is no doubt about it, people will always try to show themselves in the best light if it means that they will be recognized as top posters, which also means that they will very likely become members of the best paid campaigns. One of the best examples is the CM campaign which lasted for years and had above average pay rates, and many members who had no chance of being accepted due to their low rank often applied there and hoped that one day they would be part of the campaign.
It's undeniable that with signature campaigns nowadays, people become more eager and interested to participate in the forum and rank up so they can qualify for a signature campaign participant. With that, there's high chances that the forum becomes more crowded and spammers and low quality posters have been increasing in number in the forum.
~snip~
The interest still exists, but it is much less than 6+ years ago, considering that today we have a merit system, which nevertheless proved to be a significant obstacle for the majority of spammers. This does not mean that there are no spammers, but it means that it is very difficult for them to progress, especially to some higher ranks.