Patrick McKenzie is the author of bitsaboutmoney.com, which covers various topics in finance and tech. However this market also resolves to YES if he posts it to some other site, such as worksinprogress.co or kalzumeus.com. Twitter threads do not count. Prediction markets must be the primary topic of the blog post, but it may be overlapping with other topics, e.g. it would resolve to YES if he wrote a post about the regulatory challenges of prediction markets.