Reasons Behind NYTimes.com Traffic Increase Questioned

Following a NYTimes.com press release touting its own content as the reason behind "record-breaking" traffic increases during the month of March, Jason Kottke wonders if content is really the reason for the increase. Kottke cites site design tweaks, general increases in traffic to news sites, RSS and blog referrals as points to consider as well, even though the press release makes no mention of those variables.