@ & @
It's not really that hard to find the image at all thanks to Google, and it's search via image feature.
Step 1: Go to Google, and click images at the top of the page. Then click the little camera icon in the search bar, and a little box will pop up which is where you'll paste the URL of the image.
Step 2: Search. Google will try to find the most similar looking image possible. In our case since we're looking for a background we're looking for the largest resolution possible. Ta-da and there it is.
Step 3: Save it, and use it.
Gotta love imgur, and those nice artifacts. Just a note here, I use UltraIMG, because normally the images I upload to them don't come out with nearly as many ugly artifacts.
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My desktop is still Flaky from HTF: