[raphman]

I haven't used this app but I think the parent had expected that the data he entered would be confined to the application, not sent to the app developer. Simple analogy: Would you expect Microsoft to harvest every e-mail address you enter into Outlook?

[Karunamon]

Outlook is an application, not a web connected service, though. If I enter my email address when signing up for, say, Office Live, I'd expect to see a Microsoft email in my inbox every now and then.

[mcherm]

Would you expect Google to send emails to people whose addresses have been entered into Gmail?

[Karunamon]

No, but that's not what happened here. You filled out your personal card which will be shared out with everyone you "bump" with. I haven't used the app, but I'd assume this fills some kind of registration function.

[jonny_eh]

Bump emailed the guy that used their service. Your stretching the analogy a bit much.