I really enjoy most O'Reilly books and have amassed quite a collection over the years (representing a significant investment).
Initially, your on-line content (e.g. onjava.com) used to be of the same high standard as you r print content. Recently however the content updates are so infrequent as to make the site all but irrelevant. If you wish to keep high standards and retain credibility, I'd suggest that you either update your web sites with fresh content more often, or simply drop them completely.
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You're correct that we're not covering Java as we once did. We don't have a lot of books coming out on the topic, and most of our writers are exploring other topics, a reflection of the maturity of Java as a topic. I don't mean to suggest that Java isn't important to us, because it is. But our output is a reflection of the ideas and passions of the communities we interact with. Are there specific topics that you think are ripe to be covered, that are being overlooked? If so, I'd love to hear them. Or maybe you'd like to write something yourself? If so, I'd like to hear about that, too.
Also, I should let you know that we're shifting emphasis away from what I call our old content silos and towards oreilly.com as a news channel. We're publishing a ton of new content there (and anything tagged "java" by our authors automatically shows up on onjava.com), and I hope you'll find something that engages you.
Many regards, --Allen