Yes, the basic service is free. Anyone that needs to communicate with large groups of people can upgrade to send upto 80 texts at a time, The upgrade also gives the user a fully functional professional website that they can edit
with their username and password that is accessible from anywhere. This includes a link to it in their textpost.
The ref# number is an unlock code and is used to track the referrer of someone who makes a purchase, who ever referred the person that made the purchase will receive between $10-$50 depending on what is purchased. That means any upgrades or purchases made within postmytext.com can be tracked by the ref#. when anyone signs up for a free account, their own personal ref# will show at the bottom of the screen when they login. they can give this ref# to their friends or collegues so that their friends and collegues can unlock more features in their account free. when this is done
the referrers ref# is permanently assigned to the person who used it to unlock free stuff. This number is permanent, meaning it cannot be changed later and will always be associated with that user.