I see you are a new to Steemit. One thing you need to know: sharing feature works here in another way than on the Facebook.
If you want to show or tell the people about something and leave a link, write at least 100 words of your own text related to the topic to help the people understand what is it about.
"Cool thing!" or "Game changer" is not enough, it can be concidered as copy/paste or spamming with links. It is not wellcomed