HI Mike
Points World was an affiliated vendor and your original contract was with them. However, you are still a legitimate points owner, otherwise you would not be able to use the points system. When points world was dissafiliated, RCI made sure owners were able to continue in the points system. Your week at Cameron House will still be ceded into the points system and you receive your annual points allocation I presume. Did you not get any letters at the time?
If you are thinking of selling, use reputable resale companies and not companies that phone and offer you fantastic figures for your timeshare. It will, more than likely, be a big con and there is a lot of it happening. Don't go with resale companies that want large amounts of admin fees up front - you won't see it again, nor will they find a buyer.
Have a look at different timeshare forum. Timesharetalk -
www.timesharetalk.co.uk (information about the ones to avoid and the scams). Timeshare Consumers Association -
www.timeshare.org.uk (with a list of resale companies).
Some people have used Ebay to try to sell or advertise on timeshare forums.
You may need to uncede your week from the points system before you can sell, so you need to check on this. You do have to give 12 months notice to RCI about taking a week out of the system. Not all resale companies will be ready to sell the week whilst still ceded into the points system.
Hope this is of use.
Sue