One of the best ways to avoid infecting yourself with spyware is to read End-User License Agreements (EULA) carefully; unscrupulous software vendors will often sneak little booby-traps into the EULA. Click the "I Agree" button and you've given the software vendor permission to (metaphorically speaking) rifle through your pants pockets and steal all your loose change.
But nobody has time to read EULAs.
The EULAnalyzer does: it's a software application that eats EULAs. Feed EULAnalyzer a EULA and the software finds words and phrases that might be cause for alarm, and flags them for your later scrutiny. Neat!