As far as we know, Glenn Wolsey has been the first site to provide a mini review of the Xslimmer application. Thank you for that, Glenn!
The small review seems to have caused some confusion as Glenn asumes it is for Intel Macs only. Probably the selected screenshot has caused this. Here is a PowerPC one:
So, to clarify: Xslimmer works both for Intel and PowerPC Macs. If you have a PowerPC Mac, the part that gets eliminated from the slimmed apps is the Intel one. That is why Xslimmer is a universal app. You can use Xslimmer to slim it self if you want to. To check what processor architecture Xslimmer has detected you open the about window:
In addition, as it is not mentioned, I want to point out that Xslimmer has a feature by which you can drop apps from a mounted image (.dmg). It will install the application for you and then, pressing slim, you can slim it right away. Thanks to this you can save an step in installing new apps you want to slim.