When larger websites start adopting it, most others are not too far behind, therefore it’s worthwhile adding the button to your website so that visitors can recommend your content. Adding the button to your website is very easy.
As you would expect, some nice WordPress developers have released plugins that automatically insert the +1 button into your posts. Those of you who prefer to use a plugin instead of hard coding it into your website should try out The Google +1 plugin or
Google +1 Button plugin for WordPress.
I’m personally going to wait until the fantastic JetPack plugin is automated with it (I have emailed them to ask when it will be integrated).
If you are unsure about integrating the button on your site, please let me know and I’ll do my best to help :)