They're the ones that I've seen go from chaotic, scattergun marketing to a structured, methodical marketing operation that is clearly and measurably contributing to the growth of their business. And they're so pleased with the results they tell all their friends about me - brilliant!
And if you're a founder-business owner then you must have customers (hopefully many!) like this too.
But how can we turn new customers into these brilliant raving fans? What do we need to do drive that customer loyalty in our business?
Here are a few of my favourite blogs on the subject - enjoy!