Paypal shares your name and email address when it rejects Ko-fi funds. As far as I see, PP always rejects payments coming through Ko-fi. That means they'll email your personal information to each person who attempts to give you money through Tumblr. So, yes, it's a possibility. To protect your privacy, you can either use an email address and name that you don't mind sharing (potentially breaking PP's terms of service) or risk setting up a business account. Based on my experiences (in the US) with how little protection is on business information and how easily personal information can be tracked through a business's public records, I wonder how much that would help if your concern is about doxxing or stalkers.
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