No, pingler is a site that pings various search engines and other services letting them know that your blog has been updated. It is not exclusive to blogs, so any website can - and should - ping the major SEs when they update. One of my sites pings 90 some sites around the world every time I update it (which is every day). Many of them are the various versions of Google and Yahoo in other countries. Since my site is international in scope, I want to rank not only on the US Google, but also on the Australian one, the Italian one, the UK one, etc.
If you run your site through feedburner, it has a ping feature that you can toggle. Likewise, Wordpress and Joomla have plugins that allow you to insert the SEs you want pinged when you update.