We need a service to check any instance an account follows or is followed by, if this instance blocked all known (DB needed) Gab accounts. If not to notify the instance admin and checking again 5 days later. If the result is still the same then automatically blocking this instance and adding it to the DB that others check for instances not blocking Gab... and so on. After 3 weeks all Gab and not-blocking-Gab-Instances would be known and isolated. #IsolateGab
I’ll write some user stories and check with experts to write such a service. Imagine a website to authenticate with your account and get the results, or allowing the service to manage your followings (by removing or blocking those). Any experts in e.g. python welcome. We could discuss that on Matrix.
Still we would need an open and community driven database of those servers, voting end elaborating system etc.