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You wonder why there is any filtering on sms ...

• Spivak 5y ago
  Because spam really is that rampant. There aren't that many communication systems with a small search domain of user ids where anyone can send and receive messages from anyone by default.
  • maxwell 5y ago
    Why not impose costs instead of filtering?
    • indymike 5y ago
      They do.
    • SilverRed 5y ago
      The latest spam method right now is to get malware on to android phones and have the actual phones do the spamming. So if there is a cost, it gets applied to random people and not the spammers. Also if there was a cost per SMS on phones these days it would be the death of SMS because no other system charges.
  • Thaxll 5y ago
    Makes sense, but then they just blacklist entire TLD, it's a bit weird.