Both of those sites are powered by my HTML5 telnet client fTelnet, which technically is a WebSocket client. And that technicality poses a technical problem: BBSes don't support the WebSocket protocol!
So the fTelnet Proxies listed on this page are there to take your browsers WebSocket connection and help it talk to a BBSes telnet connection. Think of it like a translator helping two people who speak different languages talk to each other.
Are there no proxies located near you? Make a $10 donation, and let me know what location you want, and I'll add something as close to it as I can get.
If you're not using My fTelnet, or the embedded version of fTelnet, then this site probably isn't of much interest to you.