Your Term's of Service state "use the service for commercial purposes unless you purchased a premium subscription"

Exactly what do you define by commercial purposes, any use in a commercial environment, or when a word cloud is published ??

I love what you have done, but your Premium Subscription is eye-wateringly expensive, and I'll otherwise revert to using the free Wordle or WorditOut instead, as they does a reasonable job for nothing. Does your site advertising not give you an income ?