Well. Some people do not like them, and I understand why perhaps. They can be abused I suppose. But I found it useful. I have a busy life. And I am not always online. So I would check @steemdb or @steemd to see what i voted on while away. That way I would not miss an interesting article from someone I liked. And yes, they help you not miss voting on people you are supporting. And yes the more you support others, the more you support yourself. Does that help?