Sadly some companies have Atom/RSS feeds listed on a web page and don't
use the "auto-discovery" mechanism, this New York Times
page is one example.
You'd need to "web scrape" the page to extract the Atom/RSS feed URLs using a Python module like Beautiful Soup
Another way to create many channels at once is to import an OPML
You could write some code using the above mentioned Python module feedfinder2 or Beautiful Soup and create an OPML file for each page scraped. Then import the OPML file(s) into Awasu.
Awasu even has an API call $/channels/import
to start the OPML import dialog.
You can find some OPML files to import in the left and center columns of this page: http://feedshare.net/popular/
, the right column is a list of Atom/RSS feeds not OPML.