The digg link doesn't have a hover effect, also consider using sprites with a background-position for those social media links on the homepage because then you won't get the wait while the hover image loads.
The write a review form should probably always be visible as that is the core feature of the product, also the solid colours are a little loud.
The write a review form should probably always be visible as that is the core feature of the product, also the solid colours are a little loud.