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Thursday, December 3, 2009

Which Metrics Equal Happy Users?

This post originally appeared on the Sliced Bread Design blog.

One of the greatest tools available to me as an interaction designer is the ability to see real metrics. I’m guessing that’s surprising to some people. After all, many people still think that design all happens before a product ever gets into the hands of users, so how could I possibly benefit from finding out what users are actually doing with my products?

Well, for one thing, I believe that design should continue for as long as a product is being used by or sold to customers. It’s an iterative process, and there’s nothing that gives me quicker, more accurate insight into how a new product version or feature is performing than looking at user metrics.

But there’s something that I, as a user advocate, care about quite a lot that is really very hard to measure accurately. I care about User Happiness. Now, I don’t necessarily care about it for some vague, good karma reason. I care because I think that happy users are retained users and, often, paying users. I believe that happy users tell their friends about my product and reduce my acquisition costs. I truly believe that happy users can earn money for my product.

So, how can I tell whether my users are happy? You know, without talking to every single one of them?

Although I think that happy users can equal more registrations, more revenue, and more retention, I don’t actually believe that this implies the opposite. In other words, there are all sorts of things I can do to retain customers or get more money out of them that don’t actually make them happy. Here are a few of the important business metrics you might be tempted to use as shorthand for customer happiness – but it’s not always the case:

Retention

An increase in retention numbers seems like a good indication that your customers are happy. After all, happier customers stay longer, right?