Travel to Washington that it s to tech to 49 accounts suspected of being linked to a Russian troll factory it says Between them they sent out almost a 1000 messages about the brakes at referendum in 2016 the M.P. s are hearing evidence from the big tech companies about what they re doing to tackle the problem David Carroll who s an associate professor of media design is a witness at the hearing the M.P. s are hammering them on the amount of money that they re spending is a tiny fraction of their total ad revenues so they re really getting at the business conflict of an ad supported business model and then what percentage of that revenue is being sent to the public interest itself Twitter meanwhile is reported its 1st profit since being listed on the u.s. Stock exchange in 2013 social media company made $65000000.00 pounds in the last 3 months of last year. A study of 1300 children in England has suggested that anti obesity schemes in primary schools are not working Karen den heard tal