Can plug-in authors please be asked to provide better details about their products? Often they don't even say what their products do, let alone provide reasonable instructions as to how they work or a working demo.
I don't know how many times I've installed a plugin and figured out how it works only to learn that it doesn't do anything like what I wanted.
Great example is Reveal Box. No demo, no instructions, no description and the link to the author doesn't work.