Google+ is the latest social network people are going crazy over. Regardless of what you think of Google+ and how successful it might become, there is no reason you should not link your Google+ profile to your WordPress site. Google already has a decent tool for doing just that.
All you have to do is provide this above-pictured tool with the URL to your profile to get started. You have 4 button sizes to choose from. You have author or me attributes to choose from for your script.
If you want to just add a short link of your profile to WordPress, you can use Google Plus URL shortener to get the job done. Just copy your profile number to this tool to get started.
Google+ is still in its early stages. But it is never too early to get started with it. It could become a huge traffic driver for your site.