This infographic has been making the rounds on Twitter this week, but if you haven’t yet seen it, it’s well worth a look (click to enlarge):

Essentially, social media marketing firm Hasai took a look at a bunch of pretty standard stats on social media – but then aggregated them into a list that says some rather interesting things about Americans as a whole. Like it or not, the numbers say that we’re really into royalty, make up a majority share on LinkedIn, tweet a ton about television and – for those of us on Farmville, at least – spend the equivalent of two full weeks on the job cultivating imaginary homesteads.

But there are also numbers in there that give some more useful marketing guidance than who our fave five celebrities are on Twitter (Gaga, Bieber, Obama, Katy Perry and Britney Spears, if you’re curious). Zoom through the whole infographic to get the big picture, but in the meantime, here are some of our favorite takeaways:

– 28% of U.S. adults say they give advice about purchases on social networking sites. What does that mean? People are already talking about your brand on the social Web, so give them a place to talk – somewhere where you can respond to complaints and thank them for good words.
– The purchasing decisions of 38 million 13- to 80-year-olds in the U.S. are now influenced by social media – up 14% in the last six months. And while you can’t influence them directly (just like you can’t hug every cat, right?), we’ve never been given such a playing field to work with: All ages, all demographics, all interests. Talking to people you may never have had the resources to reach. Giving you access to audiences you never knew you had.
– Of the more than 149 million Americans actively using Facebook, 70% of them log on every day. That’s a pretty regular crowd. Learn when your day-on-day visitors are active, key your messages to those times of day and reward those regulars with some added value for frequent visits. Would you visit a brand’s Facebook page more often if you knew you’d get a little something extra whenever you stop by?
– Four out of 10 Americans who identified as frequent social users follow products, services and brands. This means that they’re willing to hear about brand messages in their news feeds – not just in banner ads. We’re entering a new age of truly mixed-messaging content in which branding and editorial can, in many situations, share equal footing – and while this can make it easier to reach your audience, it also means you’ve got to make your message sharper, stronger and more interesting than ever.

Now it’s your turn. What do you think are the key points in the infographic above, and how can we learn from them? Do you think it’s a true reflection of your own use patterns as an American consumer of social media? Let us know in the comments.