Warning to other impatient users:<p>I didn't read the instructions too well, so the half hour I spent carefully deleting gigantic/uninteresting feeds out of my subscriptions.xml file was all for naught. Because I didn't know I needed to specify the opml_file on the command line, the script just logged into my Reader account (i.e., it walked me through the browser-based authorization process) and downloaded my subscriptions from there -- including all the gigantic/uninteresting subscriptions that I did NOT care to download.<p>So now I've gone and downloaded 2,592,159 items, consuming 13 GB of space.<p>I'm NOT complaining -- I actually think it's AWESOME that this is possible -- but if you don't want to download millions of items, be sure to read the instructions and use the opml_file directive.