Demo This.
A "demo" of a product, by its very definition, is something that demonstrates how a product or process works. But the word can be used as a lure to promote a company or its full-line of products, without any "demonstration" of how their "unique method" works.
I fell for this lure when I decided to brush up on my "school" Spanish. I called a well-advertised product's number for a "free demo CD".
After a few penetrating questions, I was able to get the salesperson to admit the CD wasn't going to show me a sample of how I would be learning the language, but a sales pitch about all the languages they sell. The call was designed as a marketing tool to get information about potential customers who would land on lists for mailings and possible phone calls.
I ended the phone call.