Source: Marvel Entertainment.

Marvel's marketing is switching into high gear. After failing to use its comics to fully publicize new movie properties, Infinity, a comic-book limited series with ties to next summer's Guardians of the Galaxy movie, was last month's top-seller, according to data supplied by The Comics Chronicles.

Infinity isn't a direct tie-in, per se, but rather a teaser that features the villain Thanos, who appeared at the end of last summer's Marvel's The Avengers. Director James Gunn is to expected to reveal more about the character's role in the wide Marvel Cinematic Universe in Guardians, Fool contributor Tim Beyers says in the following video. 

That's an important change in Marvel's marketing, Tim says. Rewind to Iron Man 3. Though the film was an unqualified success, Walt Disney (DIS 0.95%) might have won more readers of its comics by having more promotional materials tied to the film available on opening weekend, which also happened to be Free Comic Book Day.

Marvel's marketing team seems to have learned its lesson in the months since. Does that make Disney stock a buy? Tim addresses this question in the video. Please watch for more.