For those of us building large areas there is the problem of avoiding obviously repetitive patterns. While ceramic and vinyl tile often form patterns, stone courtyard tiles don’t. Nor do weathered or aged floors and walls. Maeve Balfour posted in the SL Forum, Creative/Mesh section about avoiding obvious repetition.
Check out the post: Creatively harnessing UVs and Materials – an experiment
The discussion in the thread covers how handling the vertices will affect Land Impact cost.
The post describes a handy idea that solved a problem I have with one of my models. I imagine it can be used in many ways to avoid having areas with repetitive looking textures.