The amount of tokens you get for a post, depends on multiple factors. For posts like "+1","great","scam" the users get penalties, while for posting higher quality, longer posts they get rewards depending on the number of words. Also remember that there is a max limit of 25 tokens/post.
Spam or meaningless FUD posts are moderated and filtered and if a user gets reported multiple times, and has multiple warnings, they risk for life ban.