Think of tags as like a book index where you find words and which pages they are on, the same principle applies here. Although it's taken a stage further so it might not be the word, but the subject, so for example if you're looking for things to do with fractal gradients for example. A tag may bring back posts with gradient files, as well as posts that discuss gradients, or tutorials about them.
Posts tagged as HDR
Luminance HDR 2.0.1 Conversion Video
I’ve made 5 and a half minute video on the steps for converting a Jwildfire HDR render into an 8 bit image you can view on your screen. I’ll have a youtube link later but for now I’ve uploaded the video.