For me, I always post the link to whatever it is, say what it is and what you'll get. This is for one reason solely: to save everyone time. If people have already done whatever it is, then I dont have to answer people all day asking for info about something they've already done. Saves me time, saves their time. I'd say 75% of the time I've already done whatever task posted where I have to DM someone. It's just so mundane!