Twitter has reached a landmark of 500 million accounts registered on the service, according to an article published by PC Advisor.
Twopcharts - a stat site for the micro-blogging service - reported that as of 11am yesterday morning (February 23) Twitter has nearly 5,000,700,000 registered users.
Originally launched in July 2006, the micro-blogging site has gone from strength to strength. Just last year it was estimated that the site had just 300 million active users; it is now been mooted that the service could hit 600 million users in just three and a half months from now.
Although there is some controversy surrounding the figure - relating to the fact that many accounts lie dormant or have never tweeted - it is fair to assume that Twitter has a massive user base - with an estimated 140 million tweets posted everyday.
Twitter - which is also popular with advertisers looking to conduct social media marketing campaigns - are yet to comment on the story.
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