Add some tips to README

README.md

@@ -35,6 +35,22 @@ You'll have to set these up yourself:
 - (optional) PGBouncer, recommended if you want to host a public instance to pool connections to PSQL, otherwise you might run into DB pool errors
 - (optional) Anubis https://github.com/TecharoHQ/anubis, recommended if you want to host a public instance and not get DDoS'ed from bots and ai
 
+# For public instances
+
+If you want to host a public instance, you should acuire a few VPN/proxies to bypass blockage from YouTube. Otherwise, your instance (and your server IP) will simply get blocked by YouTube after a few hours max.
+
+I will not give any recommendations here because this is something you should research and manage for yourself.
+
+A few important infos:
+
+- Datacenter IPv4 proxies will not work
+- Static residential IPv4 proxies will not work
+- Most VPN providers that do not allow dynamically switching target server or target IP will not work
+- Datacenter IPv6 proxies with at most a /40 CIDR subnet will work if they allow unlimited IP rotation in that subnet
+- Rotating residential proxies will work but they're really expensive (I'm talking about upwards 50€ / months just for one)
+- You need at least 500 GiB traffic / month without DASH
+- You need at least 30 TiB traffic / month with DASH and/or local proxy. The more users use your instance, the more traffic you'll need
+
 # Build instructions
 
 Do this in a separate dir (for example /srv/invidious) under non-root permissions