I use dclick myself a lot but as an advertiser not as publisher.
What do you exactly want to know?
You can find more information about how dclick works here:
I think it's a cheap way to advertise because when you spend a certain amount on dclick. Let's say for example 10 steem dollars, then you receive 10 dollar advertising budget + 10 dclick tokens. Those tokens are used to upvote your latest post. So the cost of ads are much lower than you pay because you receive those upvotes from dclick. You only pay 25% curation rewards in reality, so if you would spend 10 steem dollar on ads then you only pay 2.5 steem dollar in reality.
