I'd heard of Shelfari, and what I'd heard wasn't good. It was second rate to GoodReads, and since it was owned by Amazon, not many people bothered with it, so I hadn't even bothered to look at it.
Then a chance mention on a writing forum made me take a new look.
I haven't explored the social side of Shelfari yet, but I did find something that I think is worth spending a little time on.
Each book listing on Shelfari has the usual fields, title, author, series, blurb. But Shelfari has more. You can add in a list of your characters and a brief description. You can write a short blurb, and a longer summary. You can list your chapter titles.
And because Shelfari is owned by Amazon, any changes you make here show up on your Amazon book page.
I have no idea if it will make any difference to sales or not, but I figure it can't hurt.
Have you used Shelfari? Any other features you can tell me about it?