Asimov's Foundation is most shared?

My goodness. That seems a little unusual, since the Harry Potter books are usually close to the top of that kind of calculation in many other groups.

Shows the appeal of SF, or something.

Perhaps, but in entering my titles, I haven't reached the Harry Potter portion of my collection yet, so with such a small sample size, it could be that the current numbers are slightly misleading.

I don't own any Harry Potter books.

I don't own any Harry Potter, and doubt I ever will. I don't have any Asimov either, and I'm not sure why. I've always like Asimov.

I'm surprised, in a Hawaii group, there are no local books in that list. Doesn't anyone else own Shoal of Time, Ruling Chiefs of Hawaii, or the like?

I've got Shoal of Time, Land and Power, and 14 books tagged Hawaiiana (although most of those are my mother's reference books). With as small a group as this at this point I suspect the "small sample size" rule comes into play.

With less than a fourth of my collection entered, I have six books tagged with Hawaii.

I don't have any books tagged with "hawaii" in this collection, but I noticed that the most shared (weighted) book now is Hawaiian Dictionary.