No it do pays If you will check the Bitcoin signature observer thread on bitcointalk, you will see this signature is listed there as in paid list and it pays $4 per post even as the salad dagging said before, the campaign is voluntary, but it do pay.
Ahan, then I don't have any idea, as I have also been a part of both these campaigns, Bitcoin Peach and BitList. Well, I do know that the BitList campaign is paying weekly bonuses to the good posters, but according to what I knew, Bitcoin Peach is paying nothing, and if it is paying $4 per week, then it's great, mate.
Nah I don't have any idea about it, maybe because they had some similarity with coinjoin or mixer feature, but I don't know for sure, you have to look for yourself, I did read about it but now I can't remember.
I am way too busy these days; if I get spare time, I will surely check about this. I asked you because you are a senior member, and you may have kinda idea about this, but you also don't remember it as well, hehe.