Has Paypal suddenly started charging sales tax?

@steakster is correct.
But why would PayPal charge and collect sales tax? It's the vendor who adds the tax to the selling price of the goods.

And as steakster stated, it applies to all forms of payment from an online sale; credit cards, checks, money orders.

I haven’t sold anything for awhile but when I placed an ad in classifieds, I had to link my PayPal account to Audiogon and register as a PayPal Merchant. And PayPal is now referring to me as a merchant.

What’s all this then?

 

I don't understand. Is everybody that's accepting PayPal for a sale called a merchant even though most hobbyists are not doing it for profit?