They aren’t scams, they are tech nerds trying to re-invent another wheel. Plebbit looked the strongest to me imho but advertising a 4chan clone as your top site on the chain/torrent network will raise alarm bells with most folks.

The two main problems I see with these approaches:

• Chain-based: lots of cpu and inter-node traffic for what? Guarenteeing you’re seeing the current version of the site? meh
• Torrent-based: quirky, less popular sites will have less peers and you may be waiting forever to see the site.

Not really doing it for me at all to be honest.