Hello @ohioinvestor! Honestly? They can be whatever you like! A simple one image post, a simple one video post, 30 images, 250 words + images. Whatever it is you need to tell your story. It is totally up to you.

I will say, the more popular posts seem to be more of a blog style, but I think that is because people on Steemit are not so interested in rewarding posts that just copy and paste images + content found elsewhere on the web.

I believe, this platform is more for a person to tell a story someone wants to actually read. Think about the sort of stuff you would like to read. That is probably how the majority here feel? I like a compelling, confounding story, even. Something I have not thought about before, or seen. I like creativity, and learning from others. I think this is more of a sharing platform than anything else. A place to share ideology, open up heated debates and so-forth. Of course, we are only 2 months live, so we will see which direction it takes over time...

Of course, these are just my opinions and observations.