Search of SearchYC based on title on 30 TechCrunch articles from March 27-29 found 7/30 articles = ~25%
PG's articles get a huge amount of karma regardless, that should probably be botted but may never make it in time (I don't know how quickly the RSS feed is generated).
Also, I omitted Matt Maroon before, but his articles generally get posted, too, even when they're little comments and not actually essays.