Emoticons and so forth ("acronyms" for example) are just as open to misunderstanding as words. If you know the person you can recognise what they mean. If you don't, a hieroglyph doesn't remove the ambiguity, if what we write isn't clear.
A song can turn up in any thread, silly or serious, and that's one of the aspects of the Mudcat which is most fun. I suppose we should be more careful about flagging songs up when that happens. What would be the best way of doing that? I suppose it would be possible to start up a new Lyr Add thread, and post it again, but maybe there's a neater way of doing it.