No, you do not need to have a premium account to use the Wordpress plugin. You may ping up to five free posts daily and if you want to be able to ping more than five posts every 24 hours, then you will need to upgrade to a premium account.

We recommend disabling the standard Wordpress ping function when using our Pingler plugin for Wordpress. This is simply to avoid the possibility that duplicate pings being sent to ping resources.

The API key is used in our browser add-ons or Wordpress plugin and it allows you to connect from your website to your account at Pingler.com This way, when you ping a URL it gets added into your account seamlessly and securely.