Bight.nl - PSA
1 To place a PSA (Public Service Announcement) click "PLACE PSA". Insert an invoice for exactly 1 millisatoshi. The invoice will not be used to make a payment but to make sure the PSA came from your Lightning node and to find the exact alias of your node.

2 Write your PSA text somewhere, insert and preview. For a newline use <br>. Only the following characters are allowed   letter number space . , ! ? @ < >

3 Now click "Pay 10 satoshi to place". Copy and pay the invoice that is now generated.

4 After your payment, you will automatically be redirected to the initial screen and your PSA message will be visible.

5 The PSA will be automatically removed after a month.