googleCards is a google+ wordpress plugin. It adds a widget to your blog that will display a link to your google+ profile so people can add you to a circle (follow you). It also displays your name, profile picture and the number of people who have you in circles.
mabujo has put some thought into the development of this plugin as he has minimised the load time for this Google+ profile widget by caching your Google+ profile data. This is what he says:
The plugin uses caching to store your google plus profile data to eliminate checking google+ on every page load. For the caching to work, your web-server needs to be able to write to wp-content. (a lot of plugins require this so it should be fine). If the plugin cannot cache it will still work, but will store the data in the database instead. If caching is working you should see a file called plus_card.txt in /wp-content/cache/.
Ready to setup googleCards? Yes? Fabulous! Read on…