We have had 60 people sign-up to KeyClusters and 8 have converted to paying customers. I'm pretty happy with the 60 sign-ups, but not delighted that only 8 have converted to paying customers. I think the issue is our free credits. We're currently offering 500 - which is a lot. Already 3 or 4 sign-ups have used multiple email addresses to get more free credits. We've decided to reduce free credits to 100.