Once registered, you'll be able to submit links and earn karma. Anything can be submitted to reddit. Well, almost anything. We'd like reddit to be the source for everything that's new on the web: if it's linkable, it's submittable. There is a caveat here: we presently only allow "work-safe" material on the main site, we did have nsfw.reddit for everything you wouldn't want your boss to see, but sadly no longer (if you're still desperate to post something nsfw, please give us a warning in the title). Clicking on the submit link will take you to this form:

url: enter the web address of what you want to submit. (e.g. http://www.kittenwar.com) If you're submitting to, say, features.reddit.com and need a self-referring post, type "self" (without the quotes) instead of a URL.

title: enter a thoughtful headline here, because skillful naming is crucial to getting the attention of your peers. If you don't enter one in, clicking the submit button will generate one automatically, which generally is a good place to start.

if your submission URL includes an "&"
Everything after it will get gobbled up, so you'll need to replace every "&" with "%26" (no quotes)

(!) tip for successful submissions
A useful and/or entertaining title can also go a long way toward piquing someone's interest. Alternatively, deceiving readers with false or misleading titles is a surefire way to suffer karmic retribution from your fellow redditors. Likewise, linkjacking an article from its original source in order to drive traffic to your personal blog will likely just drive down your karma. Submitting personal work isn't taboo, but trying to flood reddit with every blog entry you've ever written is certain to be punished.

Want to expedite the submission process? Click here for the reddit bookmarklet set.