Griffiths wrote on a wide array of subjects, in both free verse and traditional forms. Largely ignoring contemporary trends and schools, she was more likely to make imaginative use of voice and setting than to experiment radically with language, and often wrote narrative poems and dramatic monologues in the voices of historical figures and fictional characters. Her many influences included
Andrew Marvell and
Philip Larkin. Although little known to academic critics, M. A. Griffiths acquired a significant international readership over the years, many of her admirers notable poets themselves. Canadian poet Colin Ward wrote in
Rattle, "Ask who the best contemporary print poet is and you’re bound to get a wide variety of responses: Walcott, Heaney, Laux, Hill, Cohen, etc. Ask about the best online poet and you’ll get one answer: the late Margaret A. Griffiths." In a 2005 poll, Internet poetry readers declared her the poet they'd most want to see in an anthology. She was also known for her astute critique in online poetry workshops. In 2008, her "Opening a Jar of Dead Sea Mud" won
Eratosphere's annual Sonnet Bake-off, and was praised by
Richard Wilbur. Later that year she was a Guest Poet on the
Academy of American Poets website, where she was hailed as "one of the up-and-coming poets of our time". ==Posthumous publication==