[openstreetmap/openstreetmap-website] Forbid anonymous comments for notes (#1543)
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Fri Aug 30 17:25:15 UTC 2019
Another way would also be to limit the frequency of comments by "anon" IP (e.g. 1 per hour, then a captcha will be presented). If the IP is known to be in an open proxy, the threshold could be adjusted to 1 per 4 hours before the captcha is presented). Open proxies are not always bad, they are sometimes the only way to connect (from shared internet accesses in developing countries) and to help preserving users's privacy (or avoid local political/social/religious troubles for some mapped topics), or when people are traveling abroad and cannot use their regular ISP without excessive costs.
There are also open wifi hotspots in hotels, restaurants, cafés, transportations, whose IP is always changing and reused by many unrelated users, sometimes from very different locations, and some mobile ISPs that never provide any stable IPv4 address but connect them with non routable temporary IPv4 that changes at each request, they are proxies by the ISP (not every mobile ISP provide IPv6 connectivity to allow unique and stable IPv6 instead of an unstable proxied IPv4). Let's not cut the route for the exploding number of mobile users.
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