In what can only be called a brilliant marketing strategy, “Weird Al” Yankovic has managed to blitz the Web with news of his latest album, “Mandatory Fun,” thanks largely to a promotional campaign which has him releasing a new video each day for eight days straight. On Monday it was “Tacky,” a joke on Pharrell’s “Happy.” On Tuesday, it was “Word Crimes,” in which Yankovic offers grammar lessons to the tune of Robin Thicke’s “Blurred Lines.” Today, it’s a Lorde parody called “Foil.” Later this week will come riffs on Iggy Azalea and the Foo Fighters, among others. So far, it’s been vintage Yancovic shtick.