TukUI is more than just for looks. Straight from the site "Tukui is an extreme light-weight user interface for World of Warcraft dedicated to replace the one provided by Blizzard. A single addon, complete package, minimalistic look, pixel perfect, good looking, fit automatically to your resolution and uses less than 700 KB memory."

It is about customization and being a light weight addon. Please don't jump to conclusions. :D

speaking of jumping to conclusions...running lui2.0 and am currently sitting at 684 kb mem. So.........whats the difference?

Apparently you can't even read the article to realize the person gave credit to the total replacement UI they used, which, by the way, is not the one you think it is.

Proper widescreen support, easy customization, and a single addon.
Many UIs are bound to have similar layouts. There's only so much you can do with the screen space Blizzard has given us in game. I don't see how your accusations of this being a ripoff make any sense. Both are respectable UIs made in different ways.

I've used both Lui v2.0 and now I am using Tukui, and while they share similar elements, they are distinctly different.

Tukui was around before Lui was, but with the more recent versions has eliminated a lot of the other addons that made things up since he is usiung oUF. However, I find it hard to believe that you are using Lui 2.0 at less than 1mb since Lui uses Pitbull, Bartender, Omen, Recount, and kgpanels as a base. At its leanest Lui isn't that small.

If you check out the Tukui .lua files, you will see that he gives credit where credit is due. He specifically calls out Caith for one and many others.

Fail. Tukui was written BEFORE LUI package.