This is great improvement for the forum to fight spammer and low quality content poster
Bitmixer is a good campaign also, their payrate is very high now and their members can make a very decent profit, but they will must show hard work posting constructive posts on different sections of the forum. If I wasn't on Yobit, I surely would try to join their, but I can't left Yobit, after all the retribution they gave me for my posts here, I'm very thankfully to Yobit.
A good point to remove spammers also is that the signature campaign increase the payrate per post.
Where is the information that pay rate per post increased? From what I know, previously it was 0.0007 BTC per post and so it is also now.
Bitmixer hired Lauda to clean out the campaign from spammers. And this is a very good decision. It created about 100 vacancies for new users (spammers get permanent ban). However, this will make the price of Hero Member account in Bitmixer campaign rather fall, since now it is not hard to get to it.