"Things You Wouldn't Know If We Didn't Blog Intermittently."
18 February 2010
Apparently it's a word. I encountered it in a book by O. E. Rolvaag and wondered if it was an inept translation of the Norwegian phrase "in a friendly manner." But it's in the OED with that meaning, and even in Random House, not as a separate entry but as an adverb sublisting under the adjective friendly.