I chafe at spending for os additions for functions that should be built in. However; I gladly gave the author his $15 for bringing this functionality to my old Pismo and, instead, moved my irritation to Apple. This is basic stuff and there is only weak justification for not including trackpad scrolling with the basic os.

For the positives, just look at the list of features. The negatives include the need to log in for install. I understand why this is needed (because the modification is an actual OS driver); I usually don't install anything from shareware that requires my system password but this is a rare exception. The other negative equally inevitable problem shows up on reinstalls: the OS does not archive a system modification. Well, you can't blame the author for that.

<b>Great Stuff