I can't comment on the conversation itself because I don't understand (the subject) well enough. But I found the tool very interesting. This is the kind of thing that twitter should have natively.
I don't know if the bettween guys posted this, but if they did, then I say it's a brilliant promotion.
I wish someone would whisper Paul Buchheit's advice into Twitter's ears: "it's better to make a few people really happy than to make a lot of people semi-happy."
Instead of trying to be as big as possible, if they just worked on improving the website, it would be a lot more useful.
I don't know if the bettween guys posted this, but if they did, then I say it's a brilliant promotion.
[edited for typos]