I see trucks on the freeway where I can't really tell what company it is driving for except sometimes there's a large panel sticker that says LIKE US ON FACEBOOK and as far as I can tell it's a Facebook truck. I think some people are losing the concept that everyone's advertising for Facebook instead of themselves.
Also as a joke about how noisy the internet is: Almost every website has 2-6 such icons, usually twitter, github, rss and email. I don't know how most people use the internet but my eyes just glaze over them (Which is sort of sad actually, when I read a blog I like I really should subscribe to the author directly somehow). I think expanding it out to more than 20 is funny, but I may have an idiosyncratic sense of humor here.