The term "microblog" comes from micro + blog, ie small blog.
Then, "blog" is a shortened form of "Web log". And a "log" comes from "log book", which is a book used to record events on a journey.
So get this, the "log" in log book is because you would use the book to record the progress and speed of a ship by using a reel attached to a chip log... So called because it's made of wood... ie a log.
So a microblog is a small record of your journey.
I think that's very poetic that this very post is a direct descendent of mariners from 400 years ago.
