Facebook allows you to add "Like" buttons...
to items on your site.

Facebook Inc. announced an ambitious plan to get its tentacles further out into the Internet by better linking people, places and things, as it looks to turn a massive audience into a pool of well-understood consumers. A centerpiece of the changes involves a simple button offered to other Web sites, that says "Like."
Are Mobile Phones The New Loyalty Card?
Linking Customer Loyalty With Social Networking.

PEPSICO wants to sell its customers sodas whether they are near a grocery store, a restaurant or a gas station. With a new partnership that weaves its loyalty program into the location-based network Foursquare, PepsiCo gets a live notification when its customers are close to those sites, and can present offers that get them into the stores.
A 7-Step Guide to Brand Transformation
The Little Tugboat that Could: How S. Giles Helped Transform Samsung Life

Now VP of Strategic Marketing Consulting at Experian, Sunnie Giles tells the story of her efforts to help transform Samsung Life Insurance from a sleepy giant to a national juggernaut with both pride and awe. Listening to the story, I couldn’t help but think of her as an intrepid tugboat artfully turning around a recalcitrant yet enterprising aircraft carrier.
Inbound Marketing Grows in Importance
Inbound Lead Generation Expands, Outbound Contracts

As a percentage of the overall lead generation budget, inbound marketing expanded slightly from 2009 to 2010 (38% to 39%), while outbound marketing contracted more significantly (29% to 24%), writes MarketingCharts.
How to Grow Without Losing the Soul of Your Business
There are a lot of small businesses who spend...

a good part of everyday trying to be bigger than they are. They create new products and launch them into the marketplace with the hope that the right people will consume and recommend them. People work 12 hour days in a job with no overtime pay just for the chance to advance...
You Need a Strategic Plan.
You Can Have One in 13 Days.

If you don't know where you're going, how do you know when you get there? Seems like common sense, right? Yet so many companies go along without any kind of road map at all. Or they use the "we'll know it when we see it" method. Still others know where they want to be, but have no idea how to get there.