Ask HN: What do you use for you personal note taking activity?

Currently, my notes are scattered in unnamed Sublime tabs, pockets, 'safe for later' on fb, pinboards. And they don't end up much useful later.

So, fellow hackers, how do you take notes? What do you use?

I envision a platform which is very accessible (on phone/ laptop), easy and lightweight to jot down things (like sublime tabs, they are very light and I end up using them more than Evernote files, even when I am a premium member).

At the access side, those notes are easy to search, they follow some graph-like data structure, super smooth to add new updates (like if I have a movie node in my db, and I see some interesting movie somewhere, it should be super easy to add them in my list). If I am reading about some new topic, I can create stories out of them and should be able to add notes to it, like adding tweets in a tweet conversation.

I am thinking to make something of my own which cater my needs but meanwhile, I am thinking I will make what already is there rather than not using anything at all.