How much to fake a trend on Twitter? In one country, about £150
A BBC investigation has found companies offering to make hashtags trend artificially. Twitter says it's trying hard to clamp down on automated accounts - or "bots".
Reporters: Jonathan Griffin and Fahima Abdulrahman
Video journalist: Alex Dackevych
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More details about our investigation on the BBC Trending blog.
All our stories are at bbc.com/trending.
02 Mar 2018