1. Make sure you have all of your important links on your Google Profile.
2. Make as many connections as possible.
3. Encourage customers to follow you via social networks.
4. Participate in social media so people will engage with you.
5. Encourage sharing of content (there are plenty available social media buttons)
6. Include social network info on business cards/signage, etc.
7. Include social network info in your online advertising
8. There are probably many more worthwhile tips (if you have any, share them in the comments).
Google's social search doesn't end with regular web search. They're adding it to image search, and who knows what else. Look for a lot more features to become part of social search, as Google leaves that Beta tag on. Let's not forget that Gmail only left beta last year, and I don't have to tell you they've added a lot to that over the years.
Just remember that social results will always be clearly marked as such on Google's SERPs. They will be accompanied by a heading that says "Results from your social circle". Still, for traditional SEO it is just one more thing to complete as far as page real estate. That's why social is a much more of an important part of search than ever.
Google has been making many moves over the last couple years that seem to slowly turn it more and more into its own social network. Now that its profiles have a direct impact on search results, how people view Google in this light is likely to change significantly. Once more and more average users start to realize the social features are being integrated more into their everyday searches, they may find themselves getting sucked into using Google as more of a social tool, as opposed to just search.
