I gave a talk at my work to our marketing team on what Reddit and Hacker News are and why I think we should be sharing some quality content on those services.
The jist of it was that these are social sharing communities who match our areas of interest. Both communities demand a high level of quality and when we hit that quality we should share that content with them.
Basic intro to Reddit and Hacker News Talk
Here is my talk in all its nasally goodness.
Basic intro to Reddit and Hacker News Slides
And here are the slides to accompany the talk.