CheckInstall keeps track of all files installed by
a "make install" or equivalent, creates a
Slackware, RPM, or Debian package with those
files, and adds it to the installed packages
database, allowing for easy package removal or
distribution.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
Ability to detect which files would be overwritten by your install command and saving them (allowing for truly "clean" unistallation of your package and restoring your system to the exact same state it was before), and full command line configuration support.