If you've be even vaguely aware of addons and user interface modifications then you've certainly heard of auctioneer. If you haven't, here's the basics...

Auctioneer is an addon which dramatically increases a users ability to analyze the World of Warcraft auction house. The mod allows you search all items currently listed. Through multiple searches the addon then builds buying and selling averages for each item.

So what's the point? Well, using this this information you can effectively make purchases on a large scale. Allowing you to buy low, sell high, and make hundreds of gold every day by simply taking advantage of other gamers who don't understand how the AH works.

No custom user interface is complete without ditching the stock Blizzard unit frames. The blizzard frames are anything but "ideal, they are small, poorly positioned, and offer the user little information, especially for raiders. Fortunately, there's no shortage of unit frame addons out there to help us out.

1. X-Perl
Perl has basically been around forever, I can remember using the very first versions of this module in AQ40. Overall, it's just a great unit frame. It comes equipped with all the normal features you'd expect an addon to have; range finder, HoT monitor, raid frames, debuff highlighting, raid target icon, raid tooltip, in-combat indicators, 3D portraits, red and green combat flashes, timers, and configurable colors, just to name a few.

Setup on this mod is extremely fast, out of the box it's pretty much ready to go and doesn't require very much customization to get to looking good.

Now, I know normally I only do one featured addon of the week, but this one just can't wait. Damage meters are nothing new as far as addons are concerned. From the early days of Damage Meters to SW Stats, Recount, and a dozen others in between I've seen them all.

The problem with damage meters has always been their susceptibility to memory leak. Virtually every damage meter I've ever used has been a gigantic memory hog, but YACL is changing eveything.

Unlike other damage meter addons like recount and SW Stats which are poorly written parse programs that were designed around the sub-2.4 combat log, YACL has been built from the ground up and designed for the new combat log. Beyond that, it's built to be lean. It's incredibly fast and offers the same features seen in other damage meter addons without the memory issues.