Anyone use these risers?

I was wondering if anyone has these risers on their bike. If so, how do you like them? Did you have to get different control lines?

http://www.1tail.com/sa/cart/detail.asp?pg={F75BA66B-C5E0-4250-9156-35B30621E3E2}

*EDIT*

because I'm an intertubz moron, i don't know why that "link" above is not clickable. Just copy and paste.