It's not like both sides haven't been trying to get their enemies membership lists for the past 100+yr.
"...the site's administrators didn't keep this data for DisruptJ20.org, but DreamHost did...
DreamHost keeps server logs in order to manage the sites of its 400,000-plus customers and identify issues like Distributed Denial of Service attacks.
"We only retain those logs for a very brief time," Dunst wrote. "The DOJ served us with a preservation notice immediately after the inauguration, which is why we still have access to that data in this case."
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Direct link: https://www.bloomberg.com/news/articles/2017-02-28/in-video-...
"...if your product is an application that uses such a module to perform select functions, you can use it freely and there are no restrictions on selling your product. However, if what you sell is basically the functionality of the module packaged as a cloud service or on-prem software, Commons Clause does not allow it."