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.
List of the common fractal variations, their parameters and examples.
A guide to the more common variations and their parameters.
New flame game coming up, not really used Blob before and Rick wrote another great variation guide about it here. So played about a bit, and got this, which I think looks quite nice. Nothing much to the flame to get it like this either, but a fair bit of moving the transforms about on screen.