The "53,651 readers in the Silicon Valley echo chamber" argument in 2006 had more force than "only 3,739,000 readers in 2009." TechCrunch now clearly has a larger reader base than early adopter in Silicon Valley.
Good point. But TechCrunch has become 1 or 2 orders of magnitude bigger since this post. Also, I think a large segment of the target market for this product is this exact market that is very familiar with TechCrunch.