Here's the online reader that I use, it used to be Deja but they went away, and I haven't found anything better since, darn, I miss them. And that's why more people are surfing here.
http://news.interbulletin.com/ When the page comes up, you'll see a box that says Direct Jump to News Group. Type in rec.roller-coaster, in lower case and click on the read button. After a minute, the messages headers will appear in the upper right corner of the screen. Click on each message, and it will display in the lower right corner.
Here's where the problem happens. You can respond, but it gives an error message saying it can't post to the group. So you never know if your message will post, most of the time it doesn't. It's not much fun reading messages and not responding, but if you wanna see what's out there, this is how you can do it.
Here's the site for Free Agent. You download the trial version, install it on your computer, load the news groups, subscribe to rec.roller-coaster, and then you can read and post.
http://www.forteinc.com/agent/freagent.htm This software runs on your computer, whereas the other site is web based, meaning you can surf at work. That's exactly what I do, surf this site, and the news group while at work. But I have to admit, I haven't been in RRC that much since Deja went away.