I am targeting a certain keyword for search engines (Google particularly). I currently have 25 unique articles, all targeting that keyword. How would you suggest I use these articles to get the most out of them (SEO-wise) for my site? Should I post them on my site? Should I submit them to article directories? What else? Thanks!
Only use each article once so you don't get in trouble for duplicate content. See this great DP post on posting to social media and articles sites. Personally, I would put around 20 on your site, and then the rest on (different) article sites. I also use PRLog a lot, and the DP user on that post has recommended others that are great.