Thanks for keeping me updated! We definitely want to only have our addon on sites that let us manage the files, which allows us to make sure the latest file is always available (and virus free).
Often times our addon updates coincide with a site update and if a user has an outdated addon, they can't import their character info onto our site. We even switched to using the Curse repository feature which releases our addon immediately (instead of waiting a couple hours for their approval). We have over 1 million users, so even a 2 hour delay creates a ton of customer service (hundreds of emails, forum posts and tweets). And with me being the only person to handle customers, our customer service degrades... especially while I'm asleep and international people are using the site. Customer service is incredibly important to us.
I see you took the addon off you site, thank you for the very fast turnaround. How will you make sure it doesn't get re-added if you do future scrapes of other addon sites? I don't want to have to chase it down every time (again, I'm the only customer service / community outreach person).