How does this affect you?
Well, Rogers hasn't yet entirely whitelisted WoW traffic. So if Rogers detection system decides to target you, WoW traffic will also be dropped, which will disconnect you from WoW.
How can you tell you've been targeted? You'll likely experience high latency before you disconnect. It'll seem like everything is working for everyone else, just not you. Everyone else's abilities would work, but yours will either lag or simply not do anything.
Are there any definitive tests that can prove this is happening to you? I'm afraid not. Because the throttling is only dropping certain packets, pings and tracerts are completely unaffected.
What can you do about this? Not a whole lot, unfortunately. Word on the street is Rogers has decided to just update their network management policy to include this new throttling technique. What you can do once that happens is either cancel your services with Rogers (you can argue that since they changed their policy, you don't agree to it and thus don't have to pay the early termination fee), or call in and ask for compensation because you haven't been getting what you were paying for. When I initially purchased the service from Rogers, I expected to get the full speeds, within reason. Because of this new throttling technique, that has not happened and so I deserve compensation.
If you know anyone that has Rogers internet service, tell them to call and ask for compensation as well. The more people that call in and make a stink about it, the better the chance of Rogers changing their ways.
What can you do to lessen the impact of this new system? Invest in a VPN/Tunneling service. One thing Rogers does not do is modify VPN traffic. There are many cheap VPN services out there (Even free, but they're far less stable). I personally have a separate computer I use to download on so I can run that through a VPN and everything else is completely unaffected (WoW doesn't "support" VPNs, and you are likely to get a few password resets due to Blizzards anti-hacking detection system, but it's better than being constantly disconnected.)
What you need to keep in mind however, is just because you're on the Rogers network and you are experiencing disconnections, it will not always be due to this throttling.
To read more on what people are doing to combat this, go to http://www.dslreports.com/forum/r24822306-Extreme-Plus-Utorrent-Settings-and-Rogers and remember, the more people that call and complain, the more likely it is that Rogers will fix it.