Google+ is a growing social network and can drive a decent amount of traffic to your website. If you are active on Google+, there is no reason you should not share your updates on your website. The Google Plus Stream Widget Plugin is a simple script that adds your G+ stream to your sidebar. All you have to do is provide it with your account information.
This plugin is pretty simple to use. Just provide it with your account information and the number of posts that you want to show in your sidebar. This script takes care of the rest. You can change the title of your Google+ widget too. Google+ does put some limits on how you get to use its API. You are limited to 1000 calls per day (every 30 minutes).
The Google Plus Stream Widget Plugin is simple but does what it promises well. You are going to have to update your Google+ account often to get the most out of this.