Display member custom registration field in public profile

[supajug]

Hi,

I use s2member for members subscriptions.
How can I display a custom registration field in a member public profile.
For example :
http://www.imagephoto.org/author/jofang
(under the name on the top left)

the filed :
Field Type || Unique ID || Required || Levels
Text ( single line ) || Author Webpage || no || all

many thanks