NotHereAnymore is absolutely free!
But we accept donations for this service to defray expenses. Remember, we don't share your email address with anyone, nor do we bombard you with advertising. (Well, except for that small bit over there on the right, and that one down at the bottom of the page. But you can ignore them if you want.)
If you can help out, the "Donate" button will take you to PayPal to complete the payment details. You can use your PayPal account, or any major credit card. We'll accept any amount that you think is appropriate.
Thanks for your support! (And tell others about NotHereAnymore!)