I would love to know if you can send your paypal.me link safely to people you don't know. Is there any way they can hack your link or get more information from you that way.
“Is there any way they can hack your link or get more information from you that way.”
No.
After payment is sent though, both parties see each other’s name/email address in transaction details on the Activity list as standard procedure of conducting financial transactions online. If transaction require shipping, the sender/buyer provides you with shipping address.
