The phrase "a good footnote" is correct and usable in written English.
It can be used when referring to a footnote that provides valuable or relevant information in a text.
Example: "The author included a good footnote that clarified the historical context of the event discussed in the main text."
Alternatives: "an informative footnote" or "a helpful footnote".
But the whole cast is so good (Lenny Kravitz is memorable in a tiny role as a male nurse's aide and Robin Thicke's wife Paula Patton is a standout as Precious' lesbian teacher) and the movie so real and harrowing that Carey's presence is not much more than a very good footnote.
Most of these songs (like the strange funk version of the Beatles' "Something") aren't a central part of Brown's canon; they're footnotes, but good footnotes.
Their products are LCD (lowest common denominator) rather than HCF (highest common factor), but their LCD is higher than anyone else's and that must be A Good Thing [see footnote].
When Settle prepared to publish his well-researched account he had a good volume of footnotes, citations prepared, but the editors chose not to use most of them.
Essentially, they have created a Giffen good [see footnote] and marketed the living daylights out of it.
It's like a physical version of Black History Month, forcing forgotten histories into the open – a good thing – but as a footnote, a segregated narrative.
Still, Read the Footnotes needs a good effort in the mile-and-a-sixteenth Fountain of Youth to show there was nothing fluky about his 2-year-old success.
If you are a giraffe and your name is Marius, now might be a good time to leave Denmark [see footnote].
One small footnote: he talks a good deal about his two infant daughters, and how they will come to see their hair, and come to see themselves as women.
As a footnote here… a "good" idea doesn't just mean a cool concept.
