We work on this project completely in our spare time. It isn't required of course, but if you find this site useful, you can donate using the PayPal button below.
Donations help go towards ongoing costs related to keeping the site running, including hosting, bandwidth, etc. It also encourages us to commit regular updates, add features, and improve the service.
Our promise to you is that this site and its data will always remain free of charge, as a service to those in order to combat spam.