I use it and love it. Never registered it, though one of these days I'm sure I will.
actually, I haven't updated my catalog in like 2 years... going to be going home next weekend and I want to wait to get all of my shit together before I update it with all of the shit i've bought over the last 27+ months.
....actually...fuck..i may as well start working on it tonight. Fuck it.
It's pretty cool because you can enter in just the UPC and it grabs ALL of the information for you and then allows you to publish the report to the web.
Come to think of it, maybe I should register this.