While such profits are possible, they aren't sustainable and will likely lead to a blown account. (dailypriceaction.com)
Criticism of such profit shifting was largely ignored until government finances around the globe came under pressure in the years following the 2008 financial crisis, when the practice led to government inquiries, tax inspector raids, media scrutiny and promises of reform. (nytimes.com)
I've been told that I have to send form 1099 to both users whom making such profit from... (money.stackexchange.com)