It's a benefit for the witnesses to have support. They are the ones making sure steemit is even here and operating. They are doing the technical tasks for all of us. The direct benefit to you is that steemit is here at all. The benefit for each one you vote for is just that your vote goes to someone you think is up to the task. You do not make direct financial rewards for voting for a specific witness.

In witness-world, some of the the witnesses do not do the things they are supposed to do in atimely manner. Or they just do not do the task at all. But they have to be voted in or voted out. Giving Jerry your witness voting power gives him a bigger voice in the whole witness arena. We as little fish really don't have much say except as a big group.

That's what I've gotten out of this new idea in 4 months. Hopefully I have it right :)