I only record facts that I read in non-fiction (the mark-as-Q method from the article). I highlight them in Kindle while reading ebooks. I then transfer them into Anki flashcards after I'm done reading it.

I don't highlight analysis and commentary. I don't highlight how the author reached a certain conclusion, just the end result.

Some examples of what I am highlighting while reading On Intelligence by Jeff Hawkins:

"This is the neocortex, a thin sheet of neural tissue that envelops most of the older parts of the brain."

"the neocortex is about 2 millimeters thick and has six layers,"

"Stretched flat, the human neocortical sheet is roughly the size of a large dinner napkin. The cortical sheets of other mammals are smaller: the rat’s is the size of a postage stamp; the monkey’s is about the size of a business-letter envelope."

I wish there was a good way to transfer these highlights from my Kindle into Anki flashcards automatically (if someone knows a way to do this, I'm happy to hear from you). It feels like a chore right now, so I often forget to do it.