Dilbert, Canon Rumors is a Canon equipment related webseite and forum. Who cares about Nikon?!
Care to take a gander at the sub forum you're in?
Yes, I have seen the subforum. It would be a prefect place to speak about things like Sigma lenses or Manfrotto tripods. But Nikon gear normally doesn't fit on a Canon camera. Endless discussion about Sony sensors in Nikon cameras doesn't help anyone shooting with Canon cameras and lenses.
It's the perfect place to discuss anything other than Canon.
Here's the description of the forum: "Nikon
, Leica, Sigma, Tamron, Tokina and the rest go here." While endless discussions about Sony sensors in Nikon cameras may not *help* canon users, it's certainly interesting, and having the forum keeps users posting here rather than spreading out to a nikon site for nikon and a leica site for leica and a sigma site for sigma, etc. It's a canon-centric website, but that isn't to the exclusion of non-canon stuff.