If this weren't posted by Marc Ambinder I'd think it must be a parody. It certainly has the feel of a Jihadi edition of The Onion. It is, however, supposed to be al-Qaeda's first English-language, glossy propaganda magazine. Obviously Inspire is the title you'd choose too and, frankly, who can resist the appeal of a feature headlined Make a Bomb In the Kitchen of Your Mom.[UPDATE: Ambinder considers the possibility that it's a parody here.]
Ambinder says the US is a little worried by AQ's publishing ambitions, not least because they're aimed at native English-speakers. And perhaps they're right Nevertheless, this sort of caper also makes AQ seem somewhat ridiculous and, really, rather like a kind of terrorist version of Alan Partridge or something.