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"MTBoS" (variant, "MTBOS") is an acronym for "Math Twitter Blogosphere" and is used by some mathematics educators on Twitter use to describe their community. The term is often used as a hashtag on Twitter ("#MTBoS") in order to make tweets of the community more visible and searchable.

History of "MTBoS" Acronym

"Blogosphere" has a history that predates math educators' adaption of the term. it was coined as early as 1999, re-coined in 2002, and widely used by writers and the media to describe the interconnected network of blogs on the internet (

The term "twitterblogosphere" was used as early as 2010 to describe an emerging online community of math educators ( Other variants included "blogotwitterversphere" (

"Mathblogosphere" ( and "Math Twitter Blogosphere" ( were in use by 2012. Other variants included "Math Blogotwittosphere" (

The first use of the acronym was in 2013 by Christopher Danielson:
I do wonder how collective wisdom of mtbos could be brought to this larger audience. Answer may just be time.