http://daringfireball.net/index.xml
A feed containing only the full articles (like the “old” DF feed) is available as a less-frequently-updated alternative:
http://daringfireball.net/feeds/articles
Information and rates for week-long exclusive sponsorship of the Daring Fireball feed.
Annual memberships cost just $19 per year; these contributions help make this site possible. Each member receives a unique access “key”. The members-only syndicated feeds require authentication; use your email address as the username, and your membership key as the password.
http://daringfireball.net/feeds/combo
A single combined feed encompassing both the full-content and Linked List feeds. This is, in the author’s opinion, your best choice.
http://daringfireball.net/feeds/rss
The full content of each new regular article.
http://daringfireball.net/linked/rss
A daily list of blurbs and links related to Mac, web, and design nerdery.