Just started reading the second edition of UnMarketing by Scott Stratten and Alison Kraemer (literally 2 minutes ago). And right there on page two of the introduction they spell it out plain as  ...

Momentum (noun): strength or force gained by motion or by a series of events In various books I’ve been reading, as well as included in a recent presentation by an outside marketing firm,  ...

ZAG of course! I’ve just finished reading Martin Nueminberg’s book ZAG lately and am absolutely amazed (read: creeped out) by how spot on it is and how applicable it is. We’ve  ...