Conventions (noun): a rule of conduct or behavior

“Blogging can be understood to have a particular form and genre, with it’s own set of conventions and characteristics–just like any other mode of writing. This is true when we consider blogs as a form of journalism. Blogs can also be thought of to be a format, like a notebook or a chalkboard, and therefore open to the format of the author’s or authors’ needs.” (Guidelines for Blogging on the OpenLab)

I understood Conventions as the word itself, but I never quite learned the actual definition. It’s clear now that the passage is telling me that blogging has it’s own set of rules that I have to follow. It’s not quite like social media where informal writing is acceptable. There are different rules for behavior.