Sort:  

It seems that the @steemitblog run by the steemit organization promotes third-party applications which includes Dtube as seen in this recent article. I'm simply interested how they collect the 25% and what 25% they collect from. If this is cleared up more people would be enticed to join Dtube.

Yes, they only take the 25% from DTube videos (ones specifically uploaded to DTube. And it's 25% of each individual video, collected seven days after posting at the same time as your author rewards are distributed.

That's what I thought but it wasn't totally clear.