Any insider information which came with a Bloomberg terminal would be practically worthless. Every trader would have it.
You're probably confusing the sharing of insider information via the IM feature, which definitely does happen. But blaming Bloomberg for that makes about as much sense as blaming Apple for terrorists using iPhones.
The accusation is that Bloomberg uses data from the people using the terminals to inform their own trades. It popped up a little while back but I can't find the original articles.
> The Guardian also understands that JP Morgan also has concerns about how Bloomberg used information from its terminals while pursuing stories about Bruno Iksil, the trader known as the London Whale, who was blamed for massive losses at the bank last year. Bloomberg said it had blocked journalists' access to client data within 24 hours of receiving a complaint from Goldman.
Everyone is misunderstanding you. You're accusing Bloomberg of using data mined from the usage of the Bloomberg keyboard in order to make more informed trades.
You're probably confusing the sharing of insider information via the IM feature, which definitely does happen. But blaming Bloomberg for that makes about as much sense as blaming Apple for terrorists using iPhones.