Delete/disable app-installed services? I've written a bunch of services for my own use that I use frequently, but recently it's getting tougher. 

I installed some apps (such as Skim.app, apptivate) that introduce their own services (eg. Open URL in Skim) which I don't need/use. These services clutter up my services list though (Skim alone add about 4 services to the list you get when you right click a Finder item). 

Is there a way of removing these services from the list? I've tried looking for them in ~/Library/services but they aren't there. Where should I look?
In 10.6, you should be able to disable them by unchecking them in the Keyboard->Keyboard Shortcuts->Services list in System Preferences. For previous versions of OS X, there's a handy little app called Service Scrubber.

Hunting down and deleting services for apps you've already deleted can be troublesome; there are some detailed hints and tips in this article. Summary: find all the Info.plist files on your system that contain "NSServices", using a terminal command like:

find / -name "Info.plist" -exec grep -l "NSServices" {} \;


and (carefully) edit the suspect Info.plist files by hand.