Hacker News Reader

I wonder if a timer for comments to be shown could be useful. They could be batched or the time is inversely proportional to the length.

Anyone know of any website that implements this or something similar?

I've mused over the idea of a Twitter that delayed tweets by some number of hours. You could cancel during that timeframe, but not edit.

I think it would be a radically different form of interaction, but I doubt it would catch on.