Why did you choose to open and maintain an LT account? Do you/did you use other online cataloging/social networking sites, like GoodReads or Shelfari? Do you use more than one? Are they different or do they serve different purposes?”
I chose a LibraryThing account originally because it was the first book cataloging site that I found. I heard about it from a friend and the idea of having a record of all my books in one place, plus the ability to tag and organize them as I wished, immediately appealed to me. It appealed even more once I realized that there was an entire community dedicated to books. I have never met so many voracious readers! In fact, I have never met anyone who reads more than I do, and here there are reams of people who do.
I have not joined any other book cataloging sites, but I do use reading applications on my facebook profile – they don’t really do much but sit there, though.