Because we know people like options - especially options that come with little or no risk - and because the last thing most people want in their overcrowded lives is another commitment, we make our memberships easy to get into and easy to get out of. Join for a month. Join for a year. Join for five and a half months - then unsubscribe - then come back in a year and rejoin. It's all possible.
We've even had members start with one kind of membership and then switch to another kind (usually they start with monthly and then switch to annual when they're sure they want to stick around and get the best value).