When you want an article you have a reason your seeking it. You want answers to tough questions you may have and you need advice that will help make it easier for you to understand what your working on and thus allow you to fix it or use it to your advantage. Useful Articles on Computers for example must show us how to fix a problem, or tech a software bug. If we are trying to figure out why our computer is running slowly then a useful article would have to show us how the windows engine operates and what we need to check both in hardware and software to resolve the speed deficiency!