Out of curiosity: Have you ever been asked, or seen someone be asked, fifteen times? In real life, I mean? I start feeling uncomfortable the second time I rec something (be it a fannish canon or a banking service) or ask the same person if they've read it, and would never try more than three times, and no one's ever tried to push something on me more than twice, so I always thought the "a dozen times! every time you meet!" thing was an exaggeration.