10.7: Remove the Developer category from Spotlight results
Lion added a 'Developer' category to Spotlight search results which isn't listed in Spotlight's System Preferences pane. It seems to list source code files (including HTML help files from various packages) from all over the system.
All those files can clutter Spotlight results. If, for example, you use Spotlight only to launch applications, disabling every category except for 'Applications' will still yield a few dozen 'Developer' entries. Luckily, we can disable the 'Developer' category by editing Spotlight's preferences file. This hint requires Xcode, which is available as a free (but large) download from the Mac App Store. As property list files have been binary since Snow Leopard, you'll need Xcode or another property list editor to open them.
- Find and open ~/Library/Preferences/com.apple.spotlight.plist. In Lion, you'll need to use Go to Folder… to access your Library folder. You can also type: open ~/Librar ...
Source: http://feeds.macosxhints.com/click.phdo?i=37b51b2bf7ab84c18bb08b5e7f1c671f