Hm, I think I’d find it annoying if I got messages every time I “Like” something—and it would put me off Liking. If I press the Like button, I can expect to see updates from the “liked” site in my what’s new list (or whatever it’s called). That’s enough for me. It just means that I wan’t to track what’s happening on that page—not that I want to be smothered with love.
That’s my response, anyhow. 