Widget socialnetwork.php and a new tag

Hi all,

I’d like to add rel="publisher" to a link. I’ve found that the link is in socialnetwork.php and it is under /library/widgets/. I’ve edited the file and have added that code, but it doesn’t appear in the code of the web page even if i’ve tried with three browser deleting cache and cookies.

Should I make some other steps?

Thanks and ciao