@katharos Hi. When you read a post, at the bottom of the post are 3 icons: a heart which means 'I like this' - click or tap, an arrow which when clicked or tapped will give you a box to respond to the post, (when done writing - you have 500 characters to write - click or tap the DING! button below where you are writing), and the 3rd icon is like an arrow in a square. This is the boost button. You like it, you support it & you want others to see it. Click or tap on this icon. Hope this helps.