Visually: Clean-ish, wouldn't mind a more legible font for your content section. The hover on your links should be changed to a different colour, or change the actual text colour to something a little darker. Center the footer text and possibly add slightly more vertical spacing.

For the mailto: take it out, on the contact us page add a contact form with appropriate security to stop people spamming you through it. If you predefine subjects then later down the track you can setup mail filters on your end to help prioritize.