Activation keys and Torsion versions thereof...

I've noticed that there is a continual need for people to have their Torsion keys validated or re-activated. I have to ask, are most of you/them using the Demo (link never expires) and activating it with a key or the Full version (link expires in 15 minutes) you can download when you purchase it?

The reason I ask is because I too had an activation issue for Torsion with a new computer that I was readying for use with Torque. It was then that I noticed I had installed the Demo or time-trial version, and as soon as I downloaded the full version from my account and used the activation key Torsion was validated with no further problem.