What to Submit
On-Topic: Anything that good hackers would find interesting. That includes more than hacking and startups. If you had to reduce it to a sentence, the answer might be: anything that gratifies one's intellectual curiosity.
Off-Topic: Most stories about politics, or crime, or sports, unless they're evidence of some interesting new phenomenon. Videos of pratfalls or disasters, or cute animal pictures. If they'd cover it on TV news, it's probably off-topic.
I can tell that a lot of viewers found it interesting, though there are zero comments related to what's in the article. I find it hard to believe that someone collapses wavefunctions "as a curiosity". I m not sure such specialized research topics are appropriate here.