People often associate a ‘blog post’ with blogs, and nothing else.
We need to get in the habit of looking at the features of each platform and considering them as content placeholders. By doing this, every platform becomes a micro blog post platform.
Seth Godin does this really well. He creates small posts, every day (some are longer posts), I have no idea how he manages this much content, but he does.
Instagram has a description - fill it with text and you have a Micro Blog. Similarly: Facebook, LinkedIn updates - micro blogs. Even Twitter - if you can tell your story in 120 chars (to leave space for hash tags and links).
The great thing about a micro blog post is that you can expand it into a longer blog post or article for using on a different site or combine a bunch of smaller posts into a longer post later. This makes it an efficient way of content creation on a regular basis even if you don’t have time for longer writing.
Micro blogging allows you to utilise platforms like Facebook and Instagram in ways that other Marketers don’t. Add content to the platform, rather than linking off to other long form platforms all the time.
I don’t think you will pay a duplicate content penalty either since most social media platforms don’t seem to get indexed by search engines.
Micro blogging on Instagram, Facebook, LinkedIn etc. works well for content creation in small chunks, and helps boost your follower build up.
Don’t just post; use the input fields as a content host.