This increased my site's page rank to 3/10 after about six months. Just copy and paste this html - it will make your site more user interactive and the link will help too.

<iframe src="http://spreadsheets.google.com/embeddedform?key=0Am0Rl3MTlpVlcDljMUNFU2p0akE3bkxz UTdOMmVSZmc" width="760" height="948" frameborder="0" marginheight="0" marginwidth="0">Loading...</iframe>