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This is the kind of thing that makes the mempool click for people who aren't technical. Watching transactions pile up like cars on a highway is a better explanation of fee markets than any whitepaper.

The space theme is a nice touch too. Transactions floating into blocks like cargo into a ship.

One thing I'd love to see added: a filter that highlights Lightning channel opens and closes. Those are the most interesting transactions to watch in real-time because they tell you how the network is reshaping itself. Every channel open is someone betting that a particular route will be useful.