http://www.pcgamer.com/why-are-mechanical-keyboards-good/

The last several years have seen a major shift in the type of keyboards that peripheral manufacturers are producing. Mechanical keyboards have of course been around for decades in various forms but became a much more niche product with the rise of rubber dome membrane keyboards. These are much cheaper to produce but lack the quality and customization of mechanical keyboards.

Then there was a resurgence of mechanical keyboards. There are several different kinds of them, but they all have  one thing in common: tactility. What makes these tick?