A quote from Brian Halligan and Dharmesh Shah, Inbound Marketing (www.InboundMarketing.com):
The reality is that most websites look perfectly fine. The colors are fine, the logo is fine, the pictures are fine, and so on. You personally do not like the look of your website because you look at it so often. Your visitors on the other hand, are not particularly interested in your site’s colors or the type of menus used. Your visitors are looking for information—something interesting they can read and learn about—which is why it makes sense to focus on getting people to consume web content through other means such as email, RSS, and social media sites.