I agree with this 100%. I share stuff from my website and stuff from a lot of other websites, and I notice when something does well or flops, but since I have no real vested interest in it, I don't care and don't want to let upvotes dictate what I share. If I think the HN crowd will like it, and they don't that's fine, move on. I'm sure those trying to sell something see it quite differently.