I have always wanted to dowload Poolshot but I was a little nervous, as I am very paranoid now when it comes to viruses and things i download from the web (even with virus scans and detection software), and I haven't heard or seen anyone ever talk about it. I now have a second laptop which i use as my guinea pig. I downloaded the free version just to check it out and was successful with the download and no malware or viruses have surfaced. LOL YAY!! The program is great and has alot of features (which you have to pay for if you want the full version) even on the free version. I think its incredible what this program is capable of doing. From the spin and speed of the cueball, to where you want to contact the object ball, and the lines that show the cueball and object ball path not just off one rail, but all the rails depending on the speed of the balls. Ive just been playing around with it so far and i think I'm going to pay for the full version. Has anyone else used this software free or paid, and what is your feedback?