Before anyone asks - yes there are archived copies of old addon versions both on our github repository and on several of the addon sites we use, and these will continue to be available after Cataclysm comes out, so you'll be able to get those old files if you really want them. I'm not going to bother making these more easily accessible unless you give me a very good reason. "I'm on a private server and I need them since we didn't upgrade to Cataclysm" is a BAD reason - and it's illegal.
Sometimes that requires players to earn gear to give them greater powers that they haven’t yet unlocked. That sense of progression is at the center of what makes World of Warcraft great and so successful over the last 14 years. There should always be a balance between gaining gear and strength through lower-level content and taking on the hardest challenges the game has to offer. With Battle for Azeroth, Blizzard has missed the mark. Getting to elite status just requires grinding content that isn’t fun, instead of players demonstrating their skills.
When buying raw materials from the AH, keep an eye out for bargains. Choose only the cheapest items available to keep costs down. Try scanning the whole section of item listings in the AH to check prices; often the prices for stacks of items in the AH are much cheaper than individual pieces (for example, a single Thorium Bar may be priced at 3  , but a stack of 10 may actually be priced at only 2  per Thorium Bar) — you may spend more to acquire your materials, but you also save more and ensure larger profit in the long run. You can find a lot of terrific bargains this way.

They seem to have expected some things, though, see adding pets with aquatic damage (gun and ooze) aswell as a resistant cockroach to stop us from cheesing everything with elementals. Yet, a fact their damage output is low combined with shields not checking for racial damage means this mechanic prevents a lot as you mentioned. The last boss has got an ability to remove basic shields so perhaps that was not in oblivion either… unlike the reactive damage. Also, an ability that forces swap altogether with an ability which prevents from being swapped, including critters? I can't say I like it.
Awesome trick really.  In this farm we'll be taking advantage of game mechanics to exploit a way into getting more defias loot drops.  The defias leggings and gloves have respective selling prices of 3,000g and 14,000g and only drop from 1 mob in the instance a staggering 1% of the time.  But do not fret, we can get the upper hand on this.  Much like past drop-combat farms, if you kill just one of the two defias overseer's in the instance, THEN drop combat, the one you killed will instantly respawn.  The trick here is to bring a character that can consistently drop combat and score many more kills than the average farmer.  To date, a hunter is best – with night elf being slightly better because of shadowmeld.  You can also bring potions of invisibility to boost the effect.  Anyway, while the average farmer only gets 1 shot to get these super rare xmogs, with this method you can get up to 40 chances in an hour.  Seems fair right?
Check the Auction House and if 2 [Small Brilliant Shard] is cheaper than 5 [Dream Dust], then go to Winterspring and find Qia, then buy the recipe [Formula: Enchant Chest - Major Health], and make the enchant until you run out of Shards, or until you reach 300. The recipe requires Enchanting skill 275 to learn, so you will need some Dream Dust between 265-275 to make the Shield enchant.

In addition, you'll want to pick up leg and shoulder enchants and have them in your bags. These enchants have a level requirement of 80/85, but can't be placed on items above iLVL 136. You can get around this by having a level 85-100 character apply the enchant before mailing it to the character you're leveling, thus getting use of the enchants before level 85. I've personally confirmed that this works.
This is an infinte farming spot that takes place just east of maraudon.   It requires you to stand in a specific spot which will allow you to kill all the slitherblade naga that surround the river.  This spot is generally a GREAT spot since the mobs respawn instantly after death.  You will get an obscene amount of silk, wool, greens, and low level patterns.  It's one of the only remaining infinite respawn farms left in the game.
“It’s challenging for sure,” said Cobo. “but I think that, ultimately, we have to look at what’s at the core of the faction [...] Everything is about honor when it comes to the Horde, and as the story unfolds and you start to learn about the motivations behind Saurfang, or the motivations behind Sylvanas and why she’s doing what she’s doing, it starts to create a perspective around, ‘Is that the kind of person that I want to follow?’
A "stat squish" and "item squish" was implemented to lower the numbers used in the game, e.g. a legendary item previously with a level of 1000 reduced to 265. Unique class-specific buffs are added back, i.e. mages' Arcane Brilliance and priests' Mark of Fortitude. Titanforging—a random event that raises the initial item level of an item gained via drops or rewards—is still in the game; however, if the item is one of those affected by the Heart of Azeroth, then that item cannot be titanforged.

On my server there's a big shortage of Primal Air. I've tried farming it in the past using supposedly the best spot(s), but it was honestly horrible. After looking at the Wowhead for Primal Air I noticed there's actually a transmute recipe for Primal Water to Air. I will say as a warning that it apparently does have a 1 day CD like a lot of transmutes, so for some people it might not be worth the time. But at least on my server, there's not 1 Primal Air on the AH and I know that it's a constant shortage, so at the moment I could make a lot of profit just doing my daily CD for this after getting the recipe. To get the recipe you do have to be revered with the Cenarion Expedition from TBC, and there's guides on Wowhead for grinding out that rep as well. I'd recommend checking the stock of Primal Air on The Undermine Journal for your server, and if it's relatively low and you have at least 1 alchemist, go for it. It could be a decent way of making a little more passive gold, just transmuting one Primal to another. I'm probably actually gonna start rolling another alchemist at some point, and this discovery has definitely prodded me in that direction as doing this transmute won't interfere with other TBC transmutes, because there aren't default TBC transmutes as far as I'm aware.

 ":"  -  Any time a step ends in a ":" instead of a "." means that the next step is part of the current step you are on.  This generally means the next step should be done while working on the current step.  This means every "start working on" or "continue working on" will end in a ":".  But this is used with other occasions as well, so keep this in mind.
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Some players even turn this into their profession by systematically "plundering" vendors in the game world and then selling the items on the auction house at a significant markup. The reason why this works (even for items which are on unlimited supply at vendors) is, that many players don't want to spend time traveling to specific vendors to get hold of a recipe or skill book. They would rather pay a slightly higher price at their local auction house. In some sense, they use the auction house as a "super market" or "convenience store". So it is completely reasonable and legitimate to be the supplier for this convenience store and make money out of it.

From “The Burning Crusade” expansion, weapons like Klinge der Zauberei, Die Nachtklinge and recipes for different weapons are really valuable. The best example is Pläne: Teufelsstahlangschwert, worth 500.000+ Gold. These items are World Drops, you can find them in all raids and dungeons. I don’t know any Open World Drops, but that does not mean there are none. Another great transmog source are world bosses and rare spawns on Outland.