Make this my homepage but with usernames.

Hi all, and thanks for taking time to read this.  I really look forward to any response.  Have a wonderful day!  So I have a website called www.pickclickgo.com  The click here to make this your homepage button is not including the usernames now.  This used to work and not sure what happened.  I cannot see any issue with the code so it is throwing me for a loop.  Maybe someone with a lot more experience can look at my code and see.  So here is the deal.  I have 100's of users using my site and I would like it to work so that when a user is on their personal homepage, they can click the button "Make this my homepage" and it makes the full url including thier username in the popup.  Currently when I click on make this my homepage it only puts up http://www.pickclickgo.com  and does not show the user name even though they are on their ...