Some people that are starting into photography probably rely on reviews and eventually the lack on innovation specially on the Rebel line or xxD series will take it toll on Canon's position when they see at the same price point there is a better alternative.
i have to play the advocatus diaboli...
can you post such reviews?
most reviews these people will read (from commercial magazines and websites) are pretty good for canon cameras.
you have to come to a website like this or see youtube rants from unkown selfclaimed "experts" to hear really negative stuff about canon.
as much as i like canon to notice those complains... i doubt it will have an effect.