Google+ Software Engineer Lucy Hadden wrote about badges for websites starting with more options today:
When we launched Google+ pages in November, we also released Google+ badges to promote your Google+ presence right on your site. Starting today in developer preview (and soon available to all your users), we’re adding more options for integrating the Google+ badge into your website. You can configure a badge with a width that fits your site design and choose a version that works better on darker sites. You’ll also see that Google+ badges now include the unified +1 and circle count that we added to Pages last month.
If you’re still considering whether to add a Google+ badge on your website, consider this: We recently looked at top sites using the badge and found that, on average, the badge accounted for an additional 38% of followers. When you add the badge visitors to your website can discover your Google+ page and connect in a variety of ways: they can follow your Google+ page, +1 your site, share your site with their circles, see which of their friends have +1’d your site, and click through to visit your Google+ page.
The Google+ Badge makes it easy for your fans to find and follow you on Google+. With these additional options, we hope it’s even easier to create a badge that fits your website.
By Lucy Hadden, Software Engineer, Google+