As hard as it is to believe, I'm sure plenty of people give out their phone numbers when asked. I have personally witnessed many many people (including my wife) give out their number at checkout without hesitation. I guess the fact that this is continued practice means that it actually works.
This may vary by geography...my observations are from Canada.
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Who gives their phone number to store clerks? "Sorry, it's unlisted."
As hard as it is to believe, I'm sure plenty of people give out their phone numbers when asked. I have personally witnessed many many people (including my wife) give out their number at checkout without hesitation. I guess the fact that this is continued practice means that it actually works.
This may vary by geography...my observations are from Canada.
Large department stores would frequently pitch a loyalty card that's then tied up to your profile, for a which a phone number is frequently a must.
It's s numbers game. If store clerks ask everyone, all the time, then enough people will answer for the practice to be useful.
I'd argue that any HN member (or even any 1/2 tech savvy consumer) isn't exactly their target market