Quote:
Originally Posted by widebody911
I don't think they GAFF about spammers creating fake accounts; fake accounts look like real accounts when courting advertisers. However, having your verified mobile number makes it easier to link disparate records from other databases to build a more complete - and more marketable - profile of you. Facebook is pushing hard to get people to provide their mobile phone numbers, too.
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Of course they care about spammers.
Complaints get entire IP blocks blacklisted.
Hotmail got so bad that most spam filters out there blocked any hotmail address that was not explicitly whitelisted by the recipient.