ProTube actually got me using YouTube on a regular basis and became part of my nightly routine - I subscribed to channels, occasionally commented, made playlists... I even started using the (terrible) YouTube app on the Apple TV from time to time. Boy is it bad!

Before ProTube, I only watched YouTube content when it was embedded in sites I was browsing. Hopefully the current version works long enough for me to figure out a replacement (either for the app or for YouTube itself.)