Back in the early 1990s, pagers (aka beepers) were all the rage at high schools and offices. But don't get caught with one now: In an era of cell phones, PDAs, and Research in Motion's (RIM's) BlackBerry devices, pagers are no longer the epitome of coolness they once were. In fact, pagers are about as hot as rotary phones or black-and-white TVs: According to pager manufacturers such as Motorola, sales of the devices have nosedived in recent years and are expected to bottom out within 10 years.