This site is the home of the ConstructiveChaos bulletin board system, much like the kind one would connect to via dial-up during the '80s and '90s before the internet became mainstream. Bulletin boards were a fun, popular way for users to connect, post messages, download files, and play online games.
The easiest way to access the BBS is to use the in-browser terminal client. It can lag from time to time, but it gets the job done.
Click here to open the client and connect now.
You can also connect via telnet using any terminal program of your choosing.
SyncTERM is a great terminal that runs on Windows, Linux, or MAC, and resembles the fancy old DOS terminals from back in the day. Once you install it, just point it to conchaos.synchro.net (default port #23), and it will do the rest.
If you have an Android phone, you can try connecting using the ConnectBot app on the Google Play store. Your mileage may vary, however.