If you know a spot or route that you could recommend to others, you can add it to the site. It's actually quite easy to do it and later it's fun reading the comments of the riders who have visited your "cache".
Some tips to get you started: - you don't actually hide anything (it's the spot or motorcycle road that people "find") - spots that are off the beaten bath are most welcome - short routes (10-30 miles) are best because they can be combined with other routes and spots to make a longer ride - museums (motorcycles, war, aviation...) and motorcycle bars are nice destinations too. Just remember to write the "condition of logging a find" so that it doesn't require payment.
If you add a route, there's a short list of tips to make it easier for you. The short version of the Making a Cache document also helps a lot if you are making caches before you have found some.