Department of Dumb Questions

Question: what's to stop you just posting anew (like this) and ignoring the threads?  That way, you appear on Community, and your correspondents see your post.  If I threaded it, how would you know that I had sent you a message?  Or to put it another way, what is the advantage to the poster and postee of threading? It seems that the advantages are only for third parties wanting to avoid the blather.  Have I missed the point?