The goal of this blog post (which begins the same way as this newsletter) is explained further at that link.

I will soon announce a date for the commencement of the "think tank game."  If all goes well, it will go on for a few days or, if it goes really well, indefinitely.  During that time, you'll visit memeracing.net every now and then to answer or ask questions and maybe invest a few dollars worth of bitcoin.  If you write something good, you'll get an email asking you to visit the site and check out what six other people had to say in the same context.  You'll put these six blurbs, along with your own, in order by quality.  Perhaps you will put yours first, even if you think someone else's was better, or perhaps you'll be more honest.  Either way, you and those six other people will combine your judgements to find the best of the seven things, and bitcoin will be redistributed as encouragement.