Google+ announced yesterday that they are now offering Google+ Pages for businesses. You should consider setting up a Google+ Page for your business and regularly updating the page in order to promote your business and website. If you already have a Facebook page for your business this should be very familiar to you, most of the features are very similar. (If you don't have a Facebook page yet, you might as well get going and set up both now, you'll thank me for it later). If you're curious, here's a nice breakdown and comparison of Facebook Pages with Google+ Pages.
Facebook is still the leader in Social Media, but more and more people are signing up to Google+. You shouldn't ignore the fact that there is growing marketing potential for you at Google+. Your new Google+ Page will allow you to share conversations, images, links and videos and interact with your audience.
It's easy to get started - when you first sign up Google+ gives you a few steps to get some basic info setup starting with your profile image. Create your new account here: http://plus.google.com/pages/create
Important Note: If you already have a Google Place page, you should choose "Local Business or Place" and search for your Google Place page. This will allow you to link the Place page with your Google+ Page and also pre-fills some info for your convenience. (On a side note, if you are a local business and you don't have a Google Place page, you better also set one up!)
For your enjoyment, here is an example of Niche Tank's brand spankin' new Google+ Page:

Once you get setup with a new Google+ Page, consider placing a link or interactive badge on your website in order to let people know about your new Google+ Page. If you need help with that, or making your website better in other ways, I recommend contacting Niche Tank for a free consultation.
More information on Google+ Pages: http://googlewebmastercentral.blogspot.com/2011/11/grow-your-audience-with-google.html