How to tell a narrative through internet.

I am thinking about it and I want tell a story that has been rattling in my brain for quite some time. About a post-apocalyptic world. But I cant seem to figure out how to tell it. I would like to tell it through internet and through post format, as in broken down in very short "episodes"

But what should be the medium?

webcomic? eh, not that exciting plus i cant draw.
sprite art, not effective enough you are trying to tell a serious story
videos. nah the quality of home-made videos sucks
text is not an option, who wants to read a story on net

So what kind of format is possible. also can there be user participation possible?