There are a few errors. First,
The retweet en favorite button give an error 'sorry this page doesn't exist'. Second, the reply button just shows an empty bar. But it should be reply to the user right? or to the user profile account?
Third, if you click on a link it opens in the same tab. Is it possible to have a link open in a new window?
site: http://www.hrzone.nl/ see module on mid right in the sidebar.