First the statistics (from Website Monitoring Blog):
500 million active Facebook users
3 million active pages on Facebook
1.5 million local businesses have active pages on Facebook
20 million people become fans of pages every day
Average user becomes fan of 4 pages each month
431 million Google entries for “get more Facebook fans”
So what does this all mean?
When a business wants to harness the power of social media, the first step is to set up a page on Facebook. After setting up a Facebook page, the next question is how to grow the page’s fan base.
A very common technique is to offer exclusive promotions for fans. There are 386 million Google entries for "only for Facebook fans".
This is easy to do on the web, where the user is online and probably logged into Facebook. It is much more difficult in the real world, at a physical point of sale.
That's where Taggo's fan recognition service comes in.