I don't know that enterprise technologies are undervalued at HN, as much as they often cater to a smaller market. My side project (to my main start-up which is my main side project) is enterprise focused, and I'm sure I'm not the only one. But enterprise is rarely as interesting as consumer. Doesn't mean not useful or interesting, just not AS interesting.

ROI is the key concept here to me. In a down economy, being able to save people money is a huge asset. If you can directly measure the benefit to your customers that's even better.