Blizzard cracks down on arena win trading

We already know that Blizzard is tweaking arena rules to make it much tougher to artificially inflate your rating by win trading or buying high ranked teams in Season 4, but it looks like they're starting to take it one step further, by cracking down on people who indulge in it.Reports are coming in from the official forums and from other spots around the web of people getting bans or suspensions