TextClues...A Scavenger Hunt for Cell Phones

I have been reviewing a new resource called TextClues.  It is a very simple way to create SMS text message scavenger hunts for any cell phone.  What I like about the resource is that it is much less complicated than a SCVNGR type resource and the teacher can preset the hunt and then the students can text into a simple keyword code to begin their hunt.  Simple, simple!  My only negative:  it is not free.  I wish they had an educator version with some free options.  Right now it costs 14.99 for 100 clues (I cannot figure out if this is the number of clues you create or send?).  I hope TextClues will create an "edu" version for teachers to use with their students more easily.  In the meantime, they do have a free demo on their site you can try.