Note that some countries prohibit private use of GPS devices or require permission to use them. For instance, Russia and China require permission, and GPS use is forbidden in Pakistan. It's basically free. A few costs, such as the domain registration fee, site maintenace costs etc., are covered by sales of calendars . Many volunteers help run the site.
Verification is to weed out bogus submissions, and to check for obvious errors.
This is hard to answer in general - it is probably best to contact us first to make sure your special point will indeed be included and nobody else already submitted it. Keeping in mind that the main goal of the project is collecting confluences can also help determine the probability of inclusion a special point. For example, the Greenwich special visit has a strong link to longitude determination and history of navigation and therefore had a high probability of inclusion. If you need more information, contact us . The accuracy of the confluence must be to within 100 meters.