Ernst J. Teunissen
Analyst
The most apparent one is new customer growth and we've seen quite healthy new customer growth, really, since we started our strategy and also in this quarter, good customer growth. The other thing that we look at is something that we report on only directionally, but not give you numbers on, is we look at our net promoter scores. And despite the fact that we have not yet seen meaningful improvements in our repeat rates, as a matter of fact, we've seen some pressure on repeat rates as we roll out our strategy, our net promoter score is going up in, both in Europe and in North America. And that gives us a lot of confidence that, at least from a reported customer experience perspective, the metrics are going the right way, and this should become a leading indicator to the total gross profit per customer, which is something we look at internally. So we look at what will happen to our retention rates over time, as well as the spend per customer over time and the margin we make on them. So that's going in the right direction. And there are some intermediary statistics that are pointing in a good direction. So if you look at, for instance, AOV, although we don't directly manage our business to AOV, AOV, on a constant currency basis year-on-year, is trending slightly up. But if we look at North America, which is, as you've seen in our statement, is where we have had our relative success, it, actually, average order value in spend per customer is trending up, which is an indication -- is another indication for us that the value proposition is working for our customers. The other metric I would point to is just continued gross margin improvement. And this was another quarter where we had year-on-year gross margin improvement, and that's another thing that we target and watch.