I tried to delete or remove my account from their server, you can't.
I sent an email demanding they delete my account, got nothing back except an automated message saying they "care" and will be in touch in 48 hours - yeah right.
I sent another message requesting the account be deleted, again no answer.
But I did get an email like @cassel @The One asking why the plugin isn't being used anymore.. shows they are tracking the API key.