Fixing Windows Shell Icon Overlays
This video will show you how to fix the issue of icon overlays not showing up because of programs competing for Window's limited (and coveted) 15 available slots for overlays. This will be especially useful for those of you who have multiple programs making use of this feature, such as Dropbox and TortoiseSVN.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers