Not what it should be. I read a lot, and I'm mildly curious what other posters are reading. Not curious enough to climb up the greased poll you've implemented here to find out. Add flags for posters to indicate books they are currently reading and their favorite books. Add an option for posters to include a randomly generated list of 5 books they are reading and 5 of their favorite books in the sig space. Have these lists link to the poster's review of these books if one exists. You want a way to drive traffic to the books portal, not make it an inside joke that 100 people look at per month. You want lurkers and other posters to think "'On War' is really one of Smash's favorite books? I wonder why? Oh look, he's reviewed it in amusing fashion, why I think I'll purchase this item through this portal as it has provided me with information I didn't have in a casual manner and then more useful information when I took action. Kudos, Zam.com"
This currently has no hook. People interested enough to go through the current required effort to get to the portal probably already own the books, or have a favorite way of procuring them that doesn't involve you. You want traffic from casual readers, what you have now won't deliver it.
Good luck.
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Disclaimer:
To make a long story short, I don't take any responsibility for anything I post here. It's not news, it's not truth, it's not serious. It's parody. It's satire. It's bitter. It's angsty. Your mother's a *****. You like to jack off dogs. That's right, you heard me. You like to grab that dog by the bone and rub it like a ski pole. Your dad? Gay. Your priest? Straight. **** off and let me post. It's not true, it's all in good fun. Now go away.