How much time does the average smartphone user want to spend chatting to companies, or to robots?
If the people lining up to cram their services into mobile messaging channels are to be believed, the answer is: a lot. But whether they are right or not depends on how well they have understood the allure of mobile messaging in the first place.
This week, WhatsApp — the simple messaging app that Facebook bought for $19bn two years ago — gave the first hint of how it will try to justify that staggering sum. It plans to charge companies to exchange messages with its users.
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