When people see James Earl Jones, they know to expect his booming baritone voice. When Gilbert Gottfried takes the mic, you know what he’s going to sound like. In fact, you can probably hear him right now. Of course it makes sense when the voices are auditory, but the same thing happens online. People get accustomed to your voice and expect the same in the future.
If you always drop interesting, valuable nuggets to your readers, that’s what they come to expect. If nugget #1282 is slightly less valuable than #284, your readers won’t care because you’ve already earned the benefit of their doubt.
If you shout at people, that’s what people come to expect. If your readers want to be shouted at, you’re in business (although not many do).
If you are consistently funny, people will be primed to laugh before they click on your next post.
Is your voice consistent? What do your readers expect you to say next?