[jsarch]

Since the Twitter service is free, the "only" money to be made is in the displaying of the content. I believe this is recognized by UberMedia and also by Twitter and the cause for the "kill-switch."

IMO, Twitter should charge $0.001 per tweet and make $2M+ per month (http://royal.pingdom.com/2010/06/08/twitter-now-2-billion-tw...). They could also charge API users at $0.01 per sent tweet and $0.001 per received tweet and let the ad- or fee-based 3rd party twitter clients compete with a free Twitter(tm) client.

[dasil003]

Twitter would die immediately if they started charging anything per tweet. Overnight all the thoughtful individuals would ditch it, and you'd be left with a marketing ghetto that would wither on the vine.