This one might sink like a stone, because a) it’s harder to say something that is both sincere and nice about random people than it is to, say, make up an outrageous lie about the previous poster, and b) it has to start with someone saying something nice about me.
And this isn’t just a cynical attempt to fish for compliments - I think it might actually be good - if a little saccharine - to find genuinely nice things to say about each other here.
Still, anyway, here goes: Respond with an entirely complimentary observation of some kind regarding the previous poster*.
If the previous poster happens to be someone you don’t know well, or at all (and to attempt to avoid the thread ending with someone thinking ‘nobody loves me’), you may substitute instead a wish (generic if necessary) for their wellbeing, a warm greeting or something of that nature.
*(I.e. no ‘you’re a complete ass sometimes but I love ya’)
Also, you may chime in to agree with other compliments, but you may not chime in with disagreement - if you wish to dispute someone’s compliment toward another member, just give yourself a great big well-deserved pat on the back for the feat of stoic restraint you’ll be performing by saying nothing at all.
So I’ll kick off by Saying that SentientMeat, you’ve never failed to impress me with the depth and thought-through-ness of your contributions here. It’s nice to see you posting again from time to time.
**Mangetout ** always posts thoughtful answers. By that I mean he/she obviously puts some serious thought in the answers, which makes them valuable to other Dopers, and always makes me think (sometimes pretty hard) about what he/she posts.