“Keep informed” versus “stay informed”

Question

I saw "Keep Informed!" written under the social profiles of a Firefox extension in its release notes.

I think, the writer wants to say "keep abreast of all the developments, bug fixes and new features". But is "keep informed" correct? Shouldn't it be "Stay informed"?

Answer 1

Both would be understood.

I would have said "stay informed" would be the more common, but Google Books Ngram Viewer suggests that it's more recent and was less common before becoming very common very recently.