ebooks are easier to add in goodreads I’ve found but the functionality and what you’re able to do with the books at librarything is far better. I think goodreads is a little limited in that respect.

There is also advertising on goodreads that is not apparent on librarything. Their lifetime membership is cheap as chips. Also, you can give books 1/2 stars at librarthing but not at goodreads. The community at goodreads is better and more user friendly and it seems more visible. But the librarything communities are there, they just does not look like the friend spaces you’d find at other online sites like myspace or facebook – goodreads does a bit.

I also have both. Think I’d prefer to just have one!

It’s possible to add ebooks, but if the ebook in question isn’t listed in one of the big book databases LT draws from, you’ll have to add it manually. So if your title is listed in Amazon (e.g. via Kindle), LT can find the details there. It’s easy to upload covers yourself if LT doesn’t pick it up from Amazon, and if you do so, other people can select that cover to use on their own catalogue entry for the book.

Anyones welcome to friend me at GR.
http://www.goodreads.com/rebyj

SF is free, but a bear to use – even with 150 titles per page in list mode, it takes three pages to display my library and that is the ONLY way you can search for a book by author or title (sure, you could set up tags for each of those, but that’s insane for a library app and would clutter up your tags so that they are pretty much unusable). I ended up bookmarking the pages displayed in that manner, as getting to your library listing takes many clicks before being searchable. SF seems to be meant only for those who want to keep track of a very small number of books they haven’t gotten around to reading yet, who then delete the books as they go, not for someone to keep track of a vast library (so you can look it up while at a bookstore and not re-purchase the same books, for example).

LT is free only up to 200 titles (thus the smaller number I have there, so far, but I’ll be upgrading it at the lifetime rate). You can tell this application was designed by librarians. Adding books is a snap (type in the ISBN, title or author to search – or get a cuecat and let it scan the ISBN for typeless and fast entry). Once there, you can search library list by title or author or use tags. Fast searches, it doesn’t matter how many books are in the library and getting to that search box is only one click after logging in. Plus there are the widgets for your blog and even the monthly chance of getting a review copy of a book (odds may be low, but not impossible, as I’ve received three books thru them in the last year).

I haven’t really played much with GR and probably won’t – LT does everything I want. Perhaps the “friends” and “community” features are a big deal there, but they are not anything I’d ever look at all, nor participate in (I know I’m not the only one annoyed by the requests from those on GR to be my friend because we have a book in common – these emails are automatically routed to the deleted folder, as are such requests from any other groups I am on). I want to keep track of my books. Secondarily, I’d like to read reviews of others on those books or books I am considering purchasing, get lists of books by the same author and perhaps see a suggestion of books I might like, based on a sophisticated algorithm that takes into account both the books I have and any ratings I’ve given them. Forums may be nice as well (if at least searchable and it is easy to skip threads/categories of no interest), but are not essential. Books clubs, ditto – most are more annoying than helpful and remind me of the average high school teacher/college professor’s attempt to destroy good literature by dissecting it thru the lens of their own agendas.

And getting Librarian status so you can update books/covers etc is not difficult at all.