Like the next commentator, I too don't have the latest version of TrashMe, but the older (free) version works just fine on SL.
Years ago I compared all the free or trial ware uninstaller apps at that time and found TrashMe and iTrash to find the greatest number of associated files with the least amount of error.
I already purchased iTrash and it works fine. I assume the newest version of TrashMe also works fine, and if I didn't already have a great uninstaller app, I would probably buy this one.
As far as all the whiners complaining about developers wanting to earn a few dollars, "Get a life." If you don't want to pay for anything besides free, then don't, but please stop whining and downgrading ratings just because you're a cheapskate.
Seems to me that most small developer app prices have dropped dramatically within the past few years, and I can remember when the best rated uninstaller app cost about $20, and gas was about $2 a gallon.