A bit more obscure for some, but hugely useful to others: if you're a newsreader (Usenet) kind of person, there's Gwene, by the same folks who did Gmane. While

A bit more obscure for some, but hugely useful to others: if you're a newsreader (Usenet) kind of person, there's Gwene, by the same folks who did Gmane. While Gmane took mailing lists and made them available as news articles, gwene takes RSS feeds and makes them available as news articles. You need a newsreader (Thunderbird will do, or emacs/gnus, knode, pan, slrn, alpine etc.). Start here: http://gwene.org http://gwene.org or just point your newsreader at news.gwene.org. There are millions of RSS feeds, each submitted by someone. (Or you can submit your own). It's managed by Lars Magne Ingebrigtsen, the guy who wrote gnus. I find it hugely useful.