I just create the page named useronline and put the following shotcode.
[page_useronline]
The page works perfectly.
To disable the link, go to the UserOnline Options and change the line :
a href="%PAGE_URL%">< strong >%USERS%< /strong > online< /a >
< strong >%USERS%</ strong > online
WP : 3.2.1
WP-UserOnline : 2.80
