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technologyBlogger's s250m for Tumblr sale

US tech giant Yahoo has made a major bet on Tumblr – snapping up the content sharing site for $1.1bn in a deal that will reportedly net the blogging site's 26-year-old founder $250m just six years after he started it.

It makes New Yorker David Karp (right), who attended high school for only a year – the latest internet whizkid to scoop an astronomical windfall from a web start-up.

The move will give Yahoo its own social media platform as it seeks to attract younger and trendier internet users in a bid to match rivals Google and Facebook.

Best known for its clean, simplistic design, Tumblr claims to host more than 108 million blogs.