[sasoon]

Few years ago I created http://www.newswebreader.com (still functioning) website which is the web frontend for USENET. It has NNTP server in the background connected to other NNTP servers, and it displays groups, headers and posts similar to three pane Thunderbird. You can create an account and susbscribe groups, it remembers what messages you read.

Idea was in the end to make frontend to USENET that would look like Stack Overflow, with voting, and your replies would propagate back to USENET.