I've always liked 4chan's solution to this problem where you create link(s) to reference the post(s) you're replying to, and a post automatically creates links to posts that reference it. Clicking these links takes you directly to the post in question, or just hovering your mouse over them will either highlight the post if it's on your screen or pop up a little window with the post if it's not. It makes it easy to follow specific threads of conversation, find the context of the post you're reading, or find out who else weighed in on a certain topic.

I don't see this being any more effective than regular arrows. If they're armored such that regular arrows are ineffective, I can't see you getting anything into their eyes. If you shoot enough, maybe you can irritate their lungs some, but I can't see it doing anything meaningful. While it's a cool idea, it doesn't pass the bullshit test for me.

I'm going to second Tom and BDA here. It's more important for the details to serve the story then vice versa. Unless you're writing super hard sci-fi, no one is going to get mad at you because your math doesn't check out. Don't feel beholden to my math and speculation if it's getting in the way of your story. I was going to type more here, but I realized I was just repeating what Tom said in different words, so just go read his post again.

Edit: I will add this: It's ok to tell us about your world, the details you give us help bring it to life, but do it in a natural way, and don't overwhelm us. We should learn about your world the same way we learn that Tattooine has two suns, or that Coriscant is all city. No one sits down to have a conversation about it, it just shows up in an establishing shot and everyone just treats it like it's normal, 'cause to them it is. Those details are an important part of bringing a world to life, Tattooine isn't really the same without it's twin suns, but they're backstage to the story taking place.

Because you said Neptune, I used actual Neptune to do some quick and dirty math. To have a 30 day orbital period our "moon" has to orbit at about 1,000,000 km. This makes our gas giant have an angular diameter of about 170 arc minutes, or ~ 6 times larger than the moon. This would roughly mean that an eclipse would last about 6 times longer, for a max of about 45 minutes when everything lines up and you're standing in the right place. As for how blue it would make your nights (and, potentially, at least a little bit, your days), use your imagination, I feel like you've got a significant amount of artistic license there.

EDIT: And to add, just in case you don't know, your planet is tidally locked to the gas giant. The above only applies to the gas giant facing side of the planet. The other side will have uninterrupted days and very dark nights. And is probably colder, I think. And gets hit by more meteors.

Man, why is I Feel More Like a Leonard on the bottom of everyone's lists? It's the one that lodged itself firmly in my head and wont leave. Seriously, I should be charging it rent or something.

For some reason the casualness of the statement after BDA's manicness gave me a good giggle. Care to announce the release date?

Poke. Poke poke poke.