LibraryThing

am gathering data on LibraryThing users who have joined LibraryThing groups. According to the website, there are 900,000 LibraryThing users around the world, but based on the numbers that I am adding up right now, not everyone has chosen to join a special group to discuss books or other topics.

Counting up the number of people who could fit neatly into different categories is also a challenge, as some can be counted in more than one category. For example, if someone is a member of a Hogwarts LibraryThing group, they could be counted in the Childrens/YA category, the fantasy category, the single-author fan category, and the fiction category, so categorizing LibraryThing folks is not always an exact, obvious science. Not only that, but a member of one LibraryThing group could potentially belong to other groups; I can only count them once, though.