It's nice to observe anywhere you are, this forum is mega forum base on It's capacity of containment of members, and secondly i want to make this my article brief for we to understand.
I observed that the reason why some active members became inactive in the forum is as result of lacks of campaigns, I don't know if anyone have noticed that, I don't want to call names of people who has reduce their activity in the forum based their not in campaign...it means that many users will silent forum if signature campaign is not on forum, these is my little observations.
Op, should I say that your observation is true or I should go further to explain. Naturally, many people do not come here because of the passion for bitcoin. Some came here because of money and I am among those people, but as the time goes on, I recieved some high level information that made me fall in love with the forum. Now, I have passion for bitcoin. This does not mean that I will quit the forum if there's no longer signature campaign. But it means that my activity will reduce, which is what the OP is saying. There are some weeks that I wouldn't like to come online, but to remain active in my campaign, I will like to come complete some posts.
I don't like posts that lay emphasis on signature campaign as the reason for the forum being active. I don't think the presence of signature campaigns is detrimental to anyone in the forum.