Keywords in the domain are just one factor of many and I would say the page title and full URL are just as important, but still not the complete puzzle. Look at your question's URL, for example, and the keywords within. I know I personally get plenty of first-page StackOverflow results when I'm looking for answers to programming problems and there are no relevant keywords in the top-level or sub-domain.
In the long run, I would say just be honest with your content and try to make it as useful, relevant, up-to-date, and easy to find as possible. Make it easy to share and comment via Facebook integration (and the like), utilize pingbacks, SEO-friendly URLs, important keywords for categories and tags, try to find networks that will import your RSS feeds and build up your backlinks.
You can even frequent other tech news sites and write constructive comments and replies to articles to get your name out there more. In a lot of cases they allow you to post your domain or if you have a different, constructive viewpoint or good rebuttal article, link back to it directly.
The quality of information and the more Google sees your site being listed elsewhere on the web, especially from sites already held in high regard, the higher you will rank despite the addition or lack of keywords in your domain on its own.