This is a test of commonsense. Complete the next sentence:

How to spot a timeshare scam
Understand the timeshare concept.
When you buy a timeshare you are purchasing the right to use a unit at a hotel, condo, or other resort property. Timeshares can take many forms.
Typically they involve purchasing the right to use a vacation property for a given week once a year on an ongoing basis. It may involve a point system, whereby timeshare participants earn additional vacation opportunities in the normal course of timeshare use.