Thanks for the information about reporting spam text messages, I had never heard about it. I just received some spam text the other day and ended up reporting it through the FCC, but reporting straight to your mobile operator on the phone is much nicer.

ceejayoz is right about Verizon also supporting this feature (I just reported the spam message I had from the other day). Via https://community.verizonwireless.com/message/696743#696743 :

    From MikeS1_VZW

    We have heard our customers on this, and we have launched a new program
    to help with SPAM. Take one (or several) of the SPAM messages and
    forward it to 7726 (which spells SPAM). This is a new process. Once you
    forward the message to 7726, you will get a reply text message asking
    the identity of the SPAM sender (the "From" address in the SPAM message
    you received). Once received, you will get a "Thank-you" message from
    the 7726 number. We will investigate on the back end.

    The messages you send to and receive from the 7726 number are free of
    charge. This is a brand new program we are testing, and it just started
    on 09/1/11. Please make this common practice when receiving SPAM
    messages. This is not to be confused with alerts though. If you get
    alerts (something you signed up for), you should reply STOP to the
    message received before going the whole 7726 route.