Coffee vs. beer: Which drink makes you more creative?
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This is, I think, the chief issue with services like Posthaven, Medium, and Svbtle: by buying into the centralized platform, it means that you're putting your valuable content on some other service instead of using it to further your personal/corporate brand. The simple solution is to repost it, but that leads to the same issues GameFAQs faced with popular titles released on multiple platforms: when the network is split, the network effect weakens and the discourse suffers.
Coffee is great for productivity, but it's very much a "Stay on target... Stay on target..." type of drink for me.
This is somewhat consistant with the article.
But between the two definitely beer.