Library Thing has given me a nice way to keep track of books with a focus on these subjects, and to find other books on similar topics that I may be interested in reading.
Now I've discovered another new online "toy" for readers: Goodreads. It is a site that takes the idea of Library Thing one step further. Through Goodreads I have just set up a genealogy group to list and discuss books on subjects related to family history.
Interested in participating? Take a break from those good family history books you're reading and click on this link to join us. I'm looking forward to hearing about what's on your bookshelf.