I think the rewards for newbie and jr.member's signature activities are very bad now, usually requiring 10 POSTS, but only 1 stake, and there is risk of no payment.
Most of the advertising campaigns is a simple scam you have to choose those that are more reliable and solvent. The less required posts, the better because by writing 10,20 or 30 posts a week you risk moderators that spam the forum with unnecessary posts that do not contribute to the topic.