Space number in menubar Is there a way to show the space number in the menubar so you can easily tell which desktop you are on in yosemite?
Not in the menubar but you can show the name of the wallpaper on the desktop if that helps:

defaults write com.apple.dock desktop-picture-show-debug-text -bool TRUE;killall Dock


Source: http://osxdaily.com/2011/11/20/show-the-location-path-of-current-wallpaper-in-mac-os-x/