This is not just happening regarding Paypal. It`s also happening with various bogus emails claimimg to be sent from banks. Every now and then you get sent an email from a different bank asking you to follow their link with your login details. It`s the numbers game-if anyone does bank online,they`re obviously hoping to catch somebody out eventually by including every bank imaginable. Paypal or ANY bank would never ask you to submit your details this way anyway!
So don`t be fooled!