Rael's written an RSS-aggregator for Blosxom (though you can use it for lots of things), in 46 lines of perl. Tie it together with Blosxome and you've got an entire blogging engine, complet avec RSS aggregation, in fewer than 100 lines of perl!
* Aggregate (i.e. read and blog) RSS syndicated feeds of about any flavour via a simple command-line interface
* Simpler than pie drag-n-drop installation
* Small (<= 46 lines of actual code ;-) and lightweight
* Makes use of all the operating system and Web server beneath its feet have to offer
* Doesn't even require an XML parser (whatever that is ;-)
(Thanks, Rael!)
