From Developerworks, a little piece of self-promotion called Writing articles for developerWorks WebSphere

Everything you’d ever want to know about getting an article published on developerWorks.

One caveat, the article approval process is very long. My submission for the Test Client article took around 3 months to get approval. By then, I wasn’t all that interested in the topic as I had moved on to other exciting things. My suggestion is to just write the article anyway without official approval. Worst-case scenario you can self-host it.