Rav (insert name of rav that you heard this story about here) said, "Not everything that one thinks, should one say; not everything that one says, should one write; not everything that one writes, should one publish."

I would like to expand upon this, based on my own experiences:

Not everything that one thinks, should one say;
Not everything that one says, should one write in a letter;
Not everything that one writes in a letter, should one write in an email;
Not everything that one writes in an email, should one publish in an academic journal;
Not everything that one publishes in an academic journal, should one publish in a book;
Not everything that one publishes in a book, should one write on a blog;
Not everything that one writes on a blog, should one publish in Hakira.

(The reverse is also true for most of these.)