I believe they will choose most of spammers. Since here is open scam accusation, I think any reputed user will apply there. Perhaps their signature will end up like Yobit. They should resolve that accusation and hire a well reputed managers. However, I am little bit late on this thread, so I will take a look all of reply here before make any judgment.
The reward is very huge and very tempting and you can really earn a lot if you completed that 50 posts, they did not specify the number of people they are going to accept, so there is a possibility that they can accept as many people that they want and would like to apply.
It is not worth getting all the hate from the well established members. (you may even get tagged for this)
Yobit had great rewards too, look what happened to them. Many yobit signature carriers got a sig ban for months.
It is very clear, respected members of the forum aren't applying for this campaign any more.
Sometimes your reputation is more important than getting a few satoshis.
I really wish Livecoin had sorted this out, as I sent my applications to their campaign several times before.