[radishpower]

I am thinking of precise reasons why these services want the e-mail addresses in the first place. Is it to create a social network graph of the email addresses? Does this mean that all of these small services have a social graph? That doesn't seem so bad given that most people have already given that to one very large institution.

[artursapek]

If registration requires an email, they can help you find your friends using the app.

[radishpower]

Ah. right. Probably shows I'm still practicing abstinence i.e. no smart phone with 3G plan yet. Still seems its a lot less to be concerned about in comparison to what other organizations own. I suppose the sneaky under the hood part is what's jarring.