@Dan M What @Adam Vavrek is saying (not to step on his toes) is that as long as you load Munchkin -- a must-do for any of your external pages -- clicks will be logged as a
Clicked Link in Web Page activity for the anonymous lead. You can also call the Munchkin API directly if you need fancier tracking (you can basically "forge" web page views or link clicks that way, all linked to the lead).