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Schumpeter's creative destruction model 194
screen size 252
search engines 167
second-generation (2G) mobile phones 11
second-generation (2G) networks 52
security 59, 94, 141, 224
short message service (SMS) 91, 249
smart cards 55
smart phone 95
social barriers 9
software 57
Sonera Zed 121
store-and-forward messaging 223
Sulake Labs 118
synchronous communication 215
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