It's not just CBC news, but all bit-torrent that's been throttled by all the Large ISPs in Canada for a while now. The CRTC/Gov forced them to open up access so that smaller ISPs could resell bandwidth. Now, those same ISPs which charge less $$ than the big players, have had their bit-torrent throttled.
Note: this only affects ISPs which resell bandwidth. Those with their own equipment can still circumvent this.
Or imagine the student who submits his paper to the site, it gets identified as plagiarism by their real-time system, and it offers the student a better paper from their database flagged clean for just $19.99!