As far as removing participants:

Quote from: yahoo62278 on December 04, 2017, 07:34:19 PM

Users not posting a min of 25 posts per week for 2 consecutive weeks will be removed
If you receive neg trust while enrolled you receive no pay and will be removed
If youre placed on SMAS blacklist during your time enrolled you will not be paid

Quote from: Hhampuz on March 27, 2019, 02:17:25 AM

*Make a minimum of xx constructive posts each week that you participate. Failure to meet this requirement could lead to your termination from the campaign without notice.
*Do not have any legitimate negative feedback from any DT member. Receiving negative feedback during your stay could lead to your termination from the campaign without payment or notice.

Edit: Hhampuz minimum post depends on the campaign, Livecoin minimum is 10, while 777 coin and Bitvest is 15. Yahoo is consistent with his 25 minimum post.

There is also exceptions on local boards:

Quote from: Hhampuz on May 01, 2019, 07:54:40 PM

Together with Cloudbet I'm launching this Campaign that will focus on local board posters, specifically in the Philippines, Indian, Russian & French ones. If you frequent these boards we want to hire you for this 4-week trial Campaign!