"[Biz Stone] said that tracking keywords for companies, giving companies an official presence on the site and helping them to introduce themselves to customers were all possible revenue generators. Read between the lines here; this means advertising, paid placement, data mining and monitoring (brand and reputation management)."

"Within the next 10 days, Twitter will start putting search into the Twitter home pages of about 1 per cent of users, to test the waters and ask for feedback, before rolling it out across the network, Mr Stone said."