title: What do I do with the PayPal public key?
body: <p>So what do you use the secret key for ?</p>
  <p>I'm developing using WordPress/Php and got a bit annoyed at the various Paypal plugins not doing exacly what I wanted them to, so I wrote my own plugin which works perfectly. I can get any interaction I want within my applications.</p>
  <p>I'm using Paypal checkout, but my implementation only uses the public key. Most PayPal plugins I've seen you have to provide both the public and private keys. It just dawned on me that I'm not using the private key.</p>
  <p>My question is what do I do with the private key ?</p>
  <p>Do I need to use it. I've been through the paypal documentation and although there is lots of documentation about the private key, there is nothing that says you have to use it. Should I be bothered about not using it.</p>