Post Editor is a free Chrome extension that adds a formatting toolbar to Google+. You can make text appear in bold or italics, and you can easily insert symbols into your Google+ posts.
This is a great way for Chrome users to make their posts shine on Google+. It also lets you avoid having to manually format the text of your posts. So it's faster and more convenient to add some style to your posts.
Download Post Editor from the Chrome Web Store
Post Editor for Google+ adds formatting buttons to the bottom of the post box so you can easily style your posts. It also includes a variety of symbols that you can automatically inject into your post.
Additional resources for Google+