"Some advice from a blog saying we shouldn't bother correcting each other's grammar online: ..."
    "*You're as in you're making this too easy for me."
  I could definitely spend hours on a blog with jokes like that! I agree it's futile to try to get others to change their ways when it comes to grammar and spelling, which is probably why I make a blog post complaining about how people using improper grammar and spelling on my server. I'll concede this is the way new languages form, but I certainly don't like the idea of this... language... being a derivative or form of English.
  As for how a trench warfare server holds up to real life trench warfare, the answer is simple: not at all. The trench warfare server I host has several things which quite obviously rip it away from reality: floating buildings, the capability to 'eat' huge amounts of dirt, putting into virtuspace and then just pulling it back out again, and above all respawning. The ability to simply die, respawn, and take revenge sucks all the seriousness out of any form of warfare, trenches or no. However, it does possess some of the same basic strategies: trench warfare is basically hiding in a giant line in the ground, waiting for the enemy to get near you then jumping up and lobbing grenades and shooting guns at the other side.

      "Two contrasting viewpoints on how the Internet is affecting language ..."
    Guns don't murder people. Guns are tools which merely happen to have a connotation of killing people. The same is true of Twitter: very few properties are inherent of a tool. I could (and for a recent blogpost, did... for demonstrative purposes) use this blog to vomit incoherent, unintelligible Internet text, but I don't. In much the same way, Twitter doesn't force people to use unintelligible text, it just makes it easier to keep your posts under the 140 character limit - especially if you want to link to something!
  Again, guns don't murder people. You'll never see a gun actively acting by itself to kill someone. In much the same way, you'll never see Twitter actively acting by itself to make the Internet 'kill' proper English - people use it the same way they use Facebook, Myspace, or my blog: they use it to spread their thoughts, opinions, and ideas. The language they do this in has no relevance with the tool itself. I could make a Twitter post in English, Spanish, French, German, Latin, or Internet. This doesn't mean Twitter is promoting or demoting any of these languages!
  However, if Twitter actively blocked any of its users who failed to use properly incorrect English, I would agree it's promoting incorrect English. The thing is, it's not, in the same way no gun has ever whispered "Hey... kill that guy over there with me..." to anyone! Guns can even be used for constructive purposes: one can use them to hunt for meat which can feed a society.

      "Here's another one: ..."
    This ties into the above comment, so I believe I've already covered it. However, I must say the shortest of words can have far, far more meaning than the longest thereof. For example, a simple "NO." carries far more weight than a technical treatise describing in a thousand words why the answer is no.