Well, how is the one who decides to post their echo to know that someone else may have a relation 10 or even a 5?
I took it to mean, "if your echo is SO WEAK, just let someone else post to this one, and wait for a better one to echo, given what you have to offer from your portfolio".
And how am I to know if you understand my echo (and how you'd relate it to the microphones)?
Seems like a kind of common sense thing to me. If you're telling a joke and the punchline is so obscure that it'll take explanation, it's probably not a very good joke and should be kept to yourself. Similarly, anyone looking at the two photos should be able to see the "echo" without too much trouble, it seems to me. If you can't post something that most others can readily ID the echo on, maybe it's a good time to just hang back and let someone else post to that particular one instead, and wait for a better one to come along for you to echo.
But this was the picture that sprang to my mind IMMEDIATELY when I saw the microphones, and I had to do quite a lot of digging and searching to come upon it, I only knew I had it somewhere. I dug and searched and here's my echo now:
I can easily see the echo of the mic heads in your photo. No explanation needed. Unfortunately, that's not so with some of the photos that have been posted, and that's what's being addressed.
It's no different than the theme threads. If someone posts in the "Red" theme a photo with absolutely no red in it, and then when questioned about it says, "well yeah, but when I look at this picture, it reminds me of a red dress my sister used to wear", it just shouldn't be in the "Red" theme thread, and making excuses for it is just plain lame. IMHO, of course.