This is an exploit that many gold farmers are using these days to stripmine Wintergrasp, Sholazar Basin, etc. It's basically the same technique they use to get themselves killed in capital cities to spell out their website URL. It's something of a teleport "hack" that lets you warp short distances. If you see someone doing it, just report them to a GM. It's a bannable offense. The video I embedded up above from Youtube user LostShard will give you a pretty good idea of what the movement is like.
"Why is it that whenever I open a GM ticket, I'm given a big text box to type in but can only use 5 lines of that box? Wouldn't it make more sense to give a text box the size of the amount of letters or lines or whatever I'm allowed to use?"
What a silly gripe! The box is big because when you first open the GM report UI, it shows you a whole lot of other information before you can actually fill out your ticket. Since filling out the ticket uses the same UI element, it doesn't resize.
"Not sure if this has been asked before but what's the deal with the Ebon Blade at the Argent Tournament? Do they offer quests, partake in NPC conversations or anything like that?"
They're specifically there for Death Knights. All of those Champion-level dailies most of us pick up from the Argent Crusade in their tent? Death Knights get them from the Ebon Blade instead.
"Because of my limited playtime and my in-game preferences, I never completed a single quest with the Argent Tournament. I have no reputation, token or whatever badge they give. Will I be able to join the 5-10-25 man Argent Coliseum's instances like anyone else in my guild, or to I need to grind something before I can enjoy that new 3.2 content?"
You'll be able to go into the 5, 10 and 25 man instances in patch 3.2 without a problem. There's no prerequisites to them besides having the appropriate gear to match the difficulty. You won't be able to get some of the new items off of vendors, which do require reputation and tokens, but you can go into the instances just fine.
"Is the depiction of Lady Vashj in the most recent comic on worldofwarcraft.com not disturbingly sexy? ...I'm just sayin'..."
Well, that's actually Queen Azshara. And... yes. Yes.
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