If I don't respond to a meta post on HR or SR, it's safe to assume that I agree with the thoughts already there and voted accordingly. If I've made a mistake, please ping me in chat or post something on meta. I'm receptive to criticism; it makes everyone better.
Everything I post on Stack Overflow is licensed to you under CC0:
you can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
Feel free to just throw it into your project without attribution. That's what most folks do anyway... but for my contributions, it's legal.
If I answered your question, a simple upvote is payment enough (and an accept is even better!). If I saved your life or something and you're feeling generous, you can buy Stackboard, my Stack Exchange client.