As you can see here Shaw is now implementing their overage charges for all of their accounts. Meanwhile Telus has stated they will not be doing that as they actually spent money on improving their infrastructure.
YouTube - SHAW on CTV Edmonton
This is one reason why I like my Telus 25MB service, no throttling or overage charges.
You can find it here as well:
CTV Edmonton - Edmonton News, Breaking News, Weather, Education, Mobile, Lottery Results, Contests