Our community is defined by people sharing knowledge and experience, whether it be a blog post, forum post, or social media post. Our communities are where you can come to learn from, and to share with your peers. A pool of thousands of knowledgeable system admins, consultants, etc. is worth tapping into. Nothing posted is official, but it's generally valuable. Don't be shy, step right up partake of the shared knowledge and add your input.
(Our communities are still a little bit disjointed due to company mergers, but we're working on bringing it all together so bear with us. Suggestions are welcome.)