I would like to say a few things though, especially to those people who think that it's an us and them scenario.
First, I have personally spent a lot of time on open source software, and you will for example find some of my code in the Linux Kernel, if someone hasn't removed it by now.
Second, I think that closed communities are a bad thing, and it's something I strongly believe that SAP needs to get better at. Yes, SAP has the largest community network in the world with 3 million members. But it's not good enough at opening that up to the wider tech community, which is a loss.
Third, I think that integration to the wider tech community like HN, would be a huge benefit to Enterprise IT. We can be silo'd and the expertise of this group in writing nice-to-use apps is something we really need.