I really like the thought put into this, but I see a few problems. Firstly, Moon light Surfer is a very long name. I may be too biased here, but if someone told me to go download some software called "Moon light Surfer" I would be a bit hesitant. (I know being native, this wouldn't need ot be downloaded, but still...) As for the name, the CS once again works theoretically, but the C really has nothing to do with the moon other than its shape. If "Moon" started with a "C" then it would be perfect. But I think "CS" representing "Moon light Surfer" would cause confusion. I know this all sounds a bit harsh, but I promise that's not my intent.
As for the whole Net- and Web- names, I feel they're a bit.. Cliche. They're used way too much. While this isn't always a bad thing, it sounds like something my grandmother would be looking for. Like I said, not bad, but certainly not "trendy". Haiku goes by a very crisp, clean, refreshing feel. I feel something like NetVoyager just doesn't fit.
I'd like to compromise a bit in these two I've mentioned. Firstly, Moonlight Surfer. I like the thought put into its name, I just think that in the end, it looks clunky. So, keeping the theme but changing the name, I'm thinking something along the lines of Luna (Latin for moon). It's clean, simple, and people will remember it. As for the NetVoyager.. I understand the nostalgia value there, but if this is going to be successful out of its niche, most people aren't going to recognize the "NetPositive" reference. Just "Voyager" would be better, in my mind.
Tranquility is very good. I also like Kumo (Or "Haikumo" in my mind...) Now, for my own ideas...
- Prose instead of NetProse (could be Prose+ for the reference, but I don't know about the "PP" abbreviation that might spawn)
- Along with the Latin theme, I was thinking Terra (World)
- There's always "Haiway" a la "Highway/Information Super-highway"
- Eternity / NEternity
Then again, we could always go with "NetNegative", "Deodorant", or "Spatula". But I suggest you take my other options more seriously.