Quite a lot of it is all the same old information and discussions, after all there is only so much you can say about carpet cleaning. I find it all a bit overwhelming infact its so much information I have tended to be online less than before. Some of the groups do seem to revolve around particular brands, but that might be a good thing as you can go straight to the group you need and should be able to get the answer you need.
There will always be the same old questions though..... Are Rug doctors a good machine? Whats the best prespray? do leaflets work? is M power good on cornflakes? are TM or portables better? etc... etc....