A couple of things off the bat,

My mark-up below is in RED.  (I don't have a fancy shmancy screen shot like dekrazee1)

Is it just me, or am I missing a new user account setup link on the main page??  I had to enter a user name and password (as a non account holder) to see if it would take me to a page that said "Hey, that doesn't work, wanna sign up?"  ...of which it did.  But wouldn't it be easier to prompt for this on your main page?

The following bit needed some reworking in my opinion...
 

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I like the simple way to add quotes to my Google Reader Feed by visiting http://quotationsbook.com/services/

This 'services' link is labeled "Stuff" on the front page.  People tend to ignore a word like this equivocating it to the likes of 'miscellaneous', or 'frivolous'.  Why not just call it "services"?  Or better yet, have a large call-out somewhere for RSS reader integration.  It's all the rage you know!

I particularly like the disclaimer about not using email addresses that are submitted to invite others to use Quotationsbook.com

Many thanks for your notes.

As a first step, I have changed the new account text to "Create an account" on the next release to be clear.

Your post-reg text suggestion is great, and I've implemented it! I can't believe we overlooked such simple things as clear language!

Great work, please keep sending more loves or loathes f you have them.

Cool!

Two things:

1) Your database of quotations is only so big, and there are many things I see missing in it. I can understand concerns about accuracy and such, but might it not be beneficial to let users add notable quotes?

2) How about letting users put in an age without handing over the actual DOB? I know I could lie, but just to simplify things ....

Hello

We're adding "add your own quotes" soon, as well as discussion forums, tied to quotes using markup. Thanks for your feedback.

Cool!

Look forward to it