I wish I had known about these a long time ago! I've been taking the liner off to take the curtain down for years. Then I hang the liner back up, because what do you do with it until you're ready to put the curtain back up! With the wonders of on line shopping for one thing, you can bring up all kinds of other related things. :) 
I saw these and had to have them! They work wonderfully, definitely would recommend them!