What makes Tumblr different from Medium or Blogger?

But I think posting on Tumblr and Medium is the same, but most of the time it depends on you, I mean, on Tumblr you can post small posts and also big articles as well.l On the other hand, on Medium, most of the people post big articles.
About bloggers, most people only use it for posting articles.
that's the only thing I notice.

In Tumblr we can post poll, blog, short story Image questions. But in blogger not individual section.

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