Ok so theres actually 493! All have an actual page PR rank. This means that each individual URL on this page has a PR, as opposed to just the top level domain. This makes a massive difference, theres little point commenting on pages w/out PR IMO. PR is noted in the column to the right. They range from PR 1-5. 2/3 are PR 1-2 and the rest are 3+. All Wordpress blogs. Happy spamming.