Readers of Idea Mapping are invited to join a special Guerrilla Marketing Association (GMA) call hosted by world-renowned Roger C. Parker, author of 38 books. Normally you must be a GMA member to participate in this call, so take advantage of this one-time opportunity. On April 4, 2007 from 7-8 PM EST Jamie Nast will be Roger’s guest. To join Roger and Jamie, call 1-404-920-6610 and use the pin 192304#.