The timeshare concept was started in 1963 by a ski resort developer. Timeshares are considered a vacation property ownership. The costs and use of timeshare ownership are spread to all the timeshare owners. Most timeshares are condo style units, but this concept has swiftly moved to cruises, yachts, motorhomes and even campgrounds. Timeshare ownership is usually sold in terms of weeks. While most of these weeks are generally fixed weeks there are also rotating and floating weeks. A fixed week is a timeshare that is used by the owner during a certain week of the year, until the contract is up. A rotating timeshare is used in a manner that allows all the timeshare owners of a particular unit to enjoy, not just a specific week, but to spread the prime weeks such as Spring break, Memorial Day, the 4th of July and Labor Day among the owners. For example, the first year you would be able to use week 49 and the next year it would be week 50 ,then week 51 and so on. The floating timeshare system is when the timeshare owner has achoice of weeks, such as the summer months (weeks 22 thru36), excluding the three high demand holiday weeks. These weeks are generaly sold as fixed weeks.