Homepage has quite a bit that should be reworked, but I think pedalpete covered anything I would've mentioned. Some Nielson might also be helpful: http://www.useit.com/homepageusability/guidelines.html

Random thoughts:

-You didn't close the anchor tag on the "Reputely's Whitepaper" link in the footer

-Contact, Feedback, and Partnership in footer all link to contact, which is redundant.

-FAQ and Documentation in footer don't actually link to anything

-"Take the tour" page could benefit from having a video, or some more screenshots.

-Footer is much bigger than it needs to be

-Tabbed navigation on left of Take The Tour page really doesn't seem to have a purpose.

-Sign up page could be the same style as the contact page.

-Pricing in navigation could be called Plans & Pricing, like the button on the homepage.

-Links to homepage and blog on contact page are unnecessary, that's what main navigation is for.

Hope that helps.