The Internet should not be a place where those with more money get to cut the line in front of those with less. Let PageRank sort it out.
Also, what's this about my example not holding weight because "information purity" doesn't exist? It's not about the information itself being pure, it's about purity of ranking. Let's just spell this out:
money !== relevance, therefore any influence of money on search engine rankings is, by definition, noise.