I benchmarked a bunch of web servers a few years ago and, in the process, heard of GWAN. It seemed ridiculously fast, but also seemed quite limited. Can anyone tell me when I would use GWAN? The description of GWAN lacked a features-functions-benefits breakdown so I wound up avoiding it because I was uncertain of its strengths/weaknesses. That said, it's fast enough to make me wonder what other web servers are missing...