If you are a subscriber, you can easily send your queries to the system via SMS text messaging.
Our SMS terms are discussed here.
In short, our SMS Query Responder can only be used by subscribers who provide their mobile phone number for that purpose. The Responder will only ever send you a message or messages in response to a query you have sent it. There is nothing to "opt-out" of. Simply do not provide your phone number and/or simply do not use the SMS Responder.
To "opt-in", you will need to edit your subscriber account and add your mobile phone number.
Log into your account, and in the right upper hand corner, click on "My Account".
This will bring up your account overview screen. Click on "Edit":
This will bring up your Account Edit screen. Scroll down to "Mobile Phone Number":
Read the terms. If you agree, enter your 11 digit (if you are in US or Canada) mobile phone number, beginning with country code. For the US, this is "1". Click "Save".
That's it. You can now send your SMS queries to: 1 310 697 8054
Message and carrier rates may apply.
Send SMS as you would normally. Phrase your questions as you would in the site Query Screen. Keep them simple but specific. Note that complex questions may require multiple SMS replies, as in the example images below.
Real World Use Case for SMS Query Responder