You really have to be kidding me?
You consider this to be a good business move, by hassling users with a spammy pop-up, every time the program is run?
Piriform will wind up losing customers with this practice. This is worse than spam, since it is directly on my desktop.
Program will be uninstalled and will never use any Piriform products again, after this.
Your email address, will also be blocked, to avoid further nags.