I could have sworn there was a discussion on HN about this more or less recently (maybe within the last month or two). I can't remember if it was a link that was submitted or an Ask HN, but it was really interesting. I can't find what I'm looking for, does anyone know what I'm referring to?

I did some searching though and I found these past discussions which may be of interest to you:

http://news.ycombinator.com/item?id=1265465

http://news.ycombinator.com/item?id=500393

http://news.ycombinator.com/item?id=436663

More: http://www.google.com/search?sourceid=chrome&ie=UTF-8...