I've burned enough midnight oil trying to add content in Wikipedia just to discover it frequently gets deleted next day. The worst part is that even if it doesn't, it always feels like that it's a question of when rather than if it would get deleted. And I'm not talking about silly content. For instance I tried to add content on properties of different grades of gortex material and someone deemed it not useful on the…
Text in a wikipedia is much like source code for a program -- it will be read many times more than it is written -- and after a certain point, it should largely stop changing, unless bugs are found. "Bugs" in the case of text are the obvious: grammar/spelling, somewhat subtle: use of language, wording (contrast eg: articles written in "simple English" wikipedia vs "normal" English) -- and external change: Hiroshima has lots of beautiful wooden houses > Hiroshima is one of two cities to have ever been bombed with a nuclear weapon (For a rather grotesque example).