In reply to captain paranoia:
Aha! I've just looked at a closed thread (the original 'Hi fi advice' thread), and see that The like/dislike buttons are available for me. Let's see if I can like myself...
No. And neither can I like any other posts, even though the buttons are still visible. I post useful advice, and don't get a single like. stroppy says he can't understand all this new-fangled stuff, and gets a like... Where's the 'dislike likes' button...?