Adventures with Dr. Lady Cutie Troublemaker » (
Update: link is broken. Dr. Troublemaker strikes again!) Update: The link is back up.
According to one of the respondents, Dr. Troublemaker has 2441 unique tags, with 1400 of them representing only one bookmark. Browsing through them myself, I saw that many of the tags are variants of each other, which complicates the problem.