I'm sorry but spam is the very least of the problems its barely even a problem. Sometimes spam even helps take some of the steam off I'm a tense situation. Hoe many people have you seen clamor that spam OS a huge problem in the NW? because your the first I've seen to male this big of a deal. The godmodding and metagaming I agree on though like when konoha went to kumogakure EVERYONE in kumo was suddenly at the gate for no reason lol like when itachi and kisame came to konoha NO ONE knew they were there until kakashi.spotted them I believeImo one of the main issues is spam. Some people don't think of the NW as a place to RP; to possibly have fun and maybe even have an intense fight with someone either their level, or someone who they've always wanted to fight. While there's also the aspect of having something at stake, coupled with the teamwork that's needed to successfully pull of an wide scale attack. Instead they think of it as simply running around on a summon or w.e, with random and often retarded thread titles with spam post taking up 2/3 of the page. Things would run so much smoother if people just stopped spamming, if it's not RP, or a really long informative post, don't put it in the thread. Even if it's not some random "lol", or troll comment, either edit it into your previous post, or VM the person. There's no need to actually post a one line response even if it is relevant to the fight.
Also the metagaming/godmodding needs to stop. Things like someone making a thread stating they're leaving Z village to head to X village, then a person from X village instantly replying with something like, but not limited to "Oh man, you're coming to X village? Hmm Looks like this might be fun". It's not needed and it's just spam, and if your Bio is the one saying it, then you're just Godmodding. Then if a different person from Z village, decides to point out that the person is godmodding, do you really need to post it in the thread? Can't you just VM them? Seriously? Or even just post it in the War Discussion thread, oh wait, I forgot. Those usually lead to spam as well. If the need to spam is so great, to the extent that it would feel like sacrilege for you to not spam at least once in a Ninja world thread, then make two War Discussion threads. One Serious War Discussion thread, used only for notifications, topics relating to the war that don't pertain to a specific thread, or rather need to be viewed by everyone, or even long running arguments. Then another Casual War Discussion thread, solely to either spam, or talk to the opposition or fellow villages about whether they're enjoying the war, who they plan on fighting next, etc. Give a baby a rattle, he's likely to suck on it eventually due to force of habit, give him a rattle and a dummy, and he's likely to use the rattle as it's supposed to be used.
Imo the biggest problem is the spam, and people getting involved in threads that they shouldn't be posting in. Spam, and random interruptions either starts and argument or fuels the argument that has already started. That or it make people miss things, or get caught up in things that could've been avoided. Then they end up making a mistake and either rage or play the blame game. For instance LoK destroying Kumo, I'm sure he posted those techniques somewhere, however I've been browsing through this war quite a lot, and I still can't find it. Why? Because it's probably buried under useless spam made by other members who probably shouldn't be posting in the thread in the first place. That, or I'm blind. Also, that war Discussion thread that was eventually made has like 16 pages. 25 posts per page, I'm pretty sure that's like at least 390+ posts. I'd have to be a pretty big retard to believe that even a fraction of those posts were needed. Spamming seems to be like some sort of chain reaction in the NW, one person does it, then another and before you know it you've got a legion of spammers. It's contagious. It's detrimental to the Rp. It need's to stop. Maybe village higher ups need to be stricter about the spam produced by their villages, it might seem harsh, it might make you think "You can't control me, what right do you have to do so?", but at the end of the day, when a single person can start a flame war by posting something unnecessary. A flame war that could ruin something for everybody else, they need to be held accountable for their actions and realize that there's a time and place for everything, spams place isn't in the ninja world. Or at least direct their spamming libido to a single thread.
Tl;dr. Stop spamming, meta gaming, godmodding, and making posts that could've been kept to Vms.