A guest post with Michael Rosen… Michael Rosen says… This week, I have invited Erica Waasdorp, a self-proclaimed “philanthropoholic,” President of A Direct Solution, and author of the best-selling book Monthly Giving: The Sleeping Giant. Erica explains why nonprofit organizations should have a monthly donor program, explores trends in monthly giving, and provides plenty of useful how-to tips all in a mercifully brief, 131 page book....