alt Hacker NewsAnd, it's on us to engage with the curiosity doorknob that others have laid out!
The first time I emailed someone on the internet about something they made that I liked, I was rather hesitant about bothering them.
The first time someone emailed me for the same reason, it made my day!
I'll often reach out to bloggers / open source devs via their email if I have feedback, a question or just otherwise want to compliment them on their work.
If you feel like you have something worth saying, even if just a compliment, it's often worth the email.
(I will say please don't ask to set up vague meetings, or create stupid github issues, however haha)