I read some rumor sites, but not for information. I have much fun instead, because they predict physically impossible cameras or lenses and are about 100% certain, that their predictions are correct, since they have got the information from very reliable sources. They are nearly always totally wrong. The chatter of fanboys can be very entertaining when wishful thinking has got so strong that critical thinking vanishes completely (remember, for example, the prediction of a µ4/4 camera, which was assumed to be as small as an LX3 with an exceptional f/2.0 fixed zoom lens).
Keeping up with the rumours is an absolute waste of time. Someone at Nikon has a 4 minute longer crap than usual and DPReview members are claiming a 6x6 sensor in a pocket camera..... Bit overdone maybe... but not much!
I visit CanonRumors.com, NikonRumors.com, DPreview.com forums, 43rumors.com and 1001noisycameras.com everyday during the announcement 'season' (Jan-Feb and Aug-Sep). Rumous and gossip add spice to life, it's good fun
Even though I'm not looking for another camera, I am interested to see and read about what certain camera companies are going to come out with this September. Maybe 99% of them won't really interest me, I'll still be ready to peruse certain ones.