Customer brand loyalty is a rich and complex subject to grasp.
What is it? (Here's a definition.)
How is it earned?
Is it worth the effort?
For your convenience, we've compiled dozens of statistics to help light the way - from how many people are active in loyalty programs to what they're looking to get out of them and how they'd like to be communicated with.
We've tried to make this list as relevant as possible, which means we combed through recent research with a focus on the US (with the occasional global stat thrown in).
These stats are culled from a variety of sources, and we've provided source links for each of them (though some are gateway pages that require you to register or submit your information to receive the actual research).
Sometimes the data conflict with other sources - we'll leave it up to you to decipher which is most accurate.
We'll keep this list updated on a weekly basis with the latest and greatest. If you know of a stat we're missing, or want your own research included in our collection, leave us a note in the comments.