My thoughts havent changed when it comes to popularity vs actual greatness. But again, i think people have to decide for themselves what dictates greatness, is it popularity and sales? Talent? Longevity? Etc.
The music machine does exist and it excludes a lot of great bands in the process. You might be able to answer that question yourself Hawg, do the Pixies deserve to be more popular than they are or do they really suck compared to Metallica, Nirvana, etc?
The debate reminds me a lot of a few years back when i think Brunell from Jacksonville had a perfect game in terms of completion percentage and the world was cooing about it. Problem was all his completions were short passes so to put a lot of weight simply on sales is the weakest of it all. If companies go out and say, we are going to push Metallica's material but ignore promoting these other bands than of course Metallica's sales will go up and remain up. The companies, radio, etc are only playing what is being pushed by the labels.
Its easy to corner the market when the competition is being held back.