Twitter founder Jack Dorsey's first ever tweet has been sold for the equivalent of $2.9m (£2.1m) to a Malaysian businessman. The tweet, which said "just setting up my twttr," was first published on March 21, 2006 and was auctioned off by Mr Dorsey for charity. The Malaysia-based buyer Sina Estavi compared the purchase to buying a Mona Lisa painting. The tweet was bought using the ether cryptocurrency, a rival to bitcoin.
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