The membership was $49 a month, and when you were a member, some of the perks were that you got website hosting (which I didn't use but I'm sure a lot do) and affiliate links (you could only be an affiliate if you were a member).
When I tried to cancel, I got the option to "park" my account for $10 a month and keep my affiliate links and hosting but not get any new content.
If you have a member's only affiliate program, that's a great way to get more revenue for people who have cancelled. You're not losing ANYTHING.
You can also use the "park" concept in other ways -
* Have a setup fee + a monthly payment, and then when people try to cancel, tell them they can "park" their membership so they don't have to pay the setup fee in case they choose to sign up again later
* Let people have access to certain features but not others (ie continued access to a convenient database but no more new content)
* Ask them why they want to cancel. If overwhelm is a reason, maybe have a "Cliff Notes" version of whatever your site is about for a lower price. You could offer the full content AND Cliff Notes to full members (most people love summaries anyway so it's totally something you should do), and then just the "Cliff Notes" to parked members who wouldn't find out about it until after they went to cancel anyway.
* I'm sure there are many other ways =)