If you don’t like Facebook’s omnipresent Like widgets (there were already plenty of reasons why not to like them and last week’s cookie-debacle only added to that conclusion) and if you already use NoScript so you don’t want to install another plugin (like Ghostery, which reports any tracking activity and allows you to block it), you can put this in NoScript’s ABE user ruleset (NoScript Options -> advanced -> ABE);
# Allow Facebook scripts and objects to be included only
# from Facebook pages
Site .facebook.com .fbcdn.net .facebook.net
Accept from .facebook.com .fbcdn.net .facebook.net
Deny INCLUSION(SCRIPT, OBJ, SUBDOC)
This tells NoScript to allow Facebook scripts (you know, to visit facebook.com), but to stop them from being included in other sites. I guess with NoScript’s surrogate scripts one might even be able to replace Facebook’s Like-widget with one that just shows the old-fashioned (and harmless) share-button. Now wouldn’t that be fun?