that's so unsettlnng that its a big enough trend that companies/people can think of profiting this way.
I always thought "majority" people would read whats under a link before sharing it and a few would just blindly share, but its the opposite!
It's worse than just not reading it. The GP post is about reading it and finding it worthy, only to find that at some point after sharing it the original author edited it to add a lot of ads.