RONALDO  I purchased the software and installed it on my new MacBook Air. It works great, it is great to actually see the application working as you can test it out and simulate a theft, have it send you video along with all of the network data and it comes straight to you.

I gave this a 4 out of 5 because the installation was a bit of a pain. You have to do some copying and pasting and wait for an email to come to you. Other than that it works great. I have not implemented the Twitter feature yet, but will get to that when I actually setup a Twitter account.   
(Version 1.1)