I have found this forum a great source of information but there are loads of unnecessary, unhelpful posts which are seem to be there purely because people are trying to increase their post counts and position.
What benefits does having a high post count or higher position bring? Surely, if people were not rewarded for having high post counts, they would stop posting unnecessary drivel.
Money.
A higher post count and merit means, for quite a lot of users with bad campaign managers, you get more money.
There are some campaign managers that are great at managing their campaigns and keeping their participants from spamming, there are similarly other managers who literally just collect a large number of users of a certain rank and just pay them based on how many posts they've made.
It depends on whether the manager/company thinks "we want a few great quality posts so it looks like our company is high quality as we can afford to accept only the best posters into our campaign" or "we want many bad posts because at least our signature will be viewed".