The tipping stage for Twitter's attractiveness was the 2007 South by Southwest Interactive (SXSWi) conference. It experienced 400,000 tweets posted for each quarter in 2007. This grew to a hundred million tweets posted for each quarter in 2008. In February 2010, Twitter buyers ended up sending 50 million tweets per day. Work on the undertaking begun on March 21, 2006, when Dorsey posted the 1st Twitter information at 12:50 p.m.