The number of pageviews to my site has been constant for quite some time. (Or rather, steadily increasing day by day). For some reason, the number of pageviews to my site doubled today! According to my referral stats, the same number of people come in through other sites as always. Just twice the number of people came in through bookmarks or manually typing the URL. Are there any explanations for this behaviour? I've gone from 3,000 pageviews to 6,000 pageviews in a single day!