Damn, what a sad attitude to see.
Say there's some 11 year old newbie programmer. She hasn't done any of this yet, and hears, "a lot of people who are into the stuff you're into, are on a place called Slashdot." Yeah, let's agree that our position is: fuck off, newbie, go get your learning and inspiration somewhere else.
I remember reading articles kind of like this, a few decades ago in "COMPUTE!" magazine and similar things. The topics were even old then, and some graybeard from the 1960s might have scoffed with "oh, I was doing that 10-20 years ago." Well, guess what, 1960s graybeard: maybe you didn't leave enough accessible notes, much less, code. And yes, someone can look at (or imagine) results, and make up how they'll do it, without needing to know how you did it. But maybe some kid wants to learn from your mistakes and successes.
Anybody who writes up decent problems and solutions is welcome, IMHO. I don't give a fuck if it's stuff we were doing decades ago. And honestly, most of that source code isn't around anyway. And when I think of my 1980s code, even if I had my old source, you sure-as-fuck wouldn't want to try to read it.