From the site: "Do you have a large Movies and TV Shows Collection and do you struggle to keep it organized? Is your Movies Collection dispersed between several locations and formats? Do you sometimes find yourself wondering if you've already seen that movie? Or if you lended it to someone?"
Sorry - 'lended it'? Dear God. Apologies - I digress. There's a mobile version, but in order to use it, you have to log into Facebook, which doesn't appeal to me at least. However, if you want to try out something like this, give it a whirl, let me know via comments what you think.