Plagiarism etc can be easily handled due to the smaller numbers compared to accounts that just joined to get rich...
Finding posts that have used text spinners are hard, and its only possible if someone reads the entire mega thread with a shitload of shitposts.
They are handled only if they are reported. I don't think it is actually in some cases. A lot of text spinners will change some of the text but with things like examples that people use and the general layout of the post, sometimes it can be a dead giveaway that they have copied and pasted the information.
According to hilariousetc on another topic, giving a merit requirement for joining bounties will only make them want to buy merits from other sources.
Why according to hilariousetc, this is obviously going to happen?
If there is a requirement to join in bounties then people will be striking up deals with each other for merits...