Well, I must admit I've tried some of them on occasion. Numbers 1 (first half), 3, 4, 5 and 6 (6 a lot), 8, 10, 11 (only when provoked
), 15 and 21. Also try typing (l(i)(k)(e) (t)(h)(i)(s) on MSN (a letter or number between the () usually results in an icon)
But, as I don't chat in chatboxes, only one or two are annoyed at any one time