Ready to be published? LXer is read by around 350,000 individuals each month, and is an excellent place for you to publish your ideas, thoughts, reviews, complaints, etc. Do you have something to say to the Linux community?
If you're a developer -- especially if you or your organization uses open source software -- GitHub has a potential answer to the question JFK would have you ask. You can pledge time to contribute to open source projects. It won't cost you anything but time, and you'll get to use your skills for the greater good.