During the hours immediately after the World Trade Centers were hit, the only way that I could keep in touch with my sister and brother-in-law was via his RIM two-way pager; it was through the pager that they were even able to meet up and flee downtown. Not surprisingly, with the cellphone networks in Manhattan deluged by the disaster, it turns out that we weren’t the only ones completely dependent on two-way paging. (Of course, the nearly flawless performance of the pagers is probably related to the fact that they aren’t used nearly as much as cellphones, and thus aren’t as prone to overloaded use.)