It’s an interesting idea linking the background illustration to the logo as in Readwhale home page: a social network dedicated to books (as the most famous Anobii and Shelfari), that reports automatically on Twitter updates in your library. 
To explore!

Glossy buttons really bugged me: despite this, I love these ones.. 
I noticed that this social  choose a style s diametrically opposed to the minimal-functional-googlish look of its major competitor, Anobii. An accidental or a conscious differentiation?