Look at what you're searching on Google. From time to time there's a problem for which you can't find a solution with a single search, and you have to combine results from 2+ searches.<p>Title: your ideal search, that failed to produce results. Body: your solution.<p>These are generally helpful, SEO-friendly, and fast to write posts, say 30min-1h after you have your solution. It's a good "trick" to exercise your writing and grow your blog quickly.<p>These are some examples I experimented with (2016):<p>- A Quick Demo of Apache Beam with Docker, ~11k views<p><a href="https://medium.com/@0x0ece/a-quick-demo-of-apache-beam-with-docker-da98b99a502a" rel="nofollow">https://medium.com/@0x0ece/a-quick-demo-of-apache-beam-with-...</a><p>- Read Offset Checkpoint Stored in Kafka, ~3k views<p><a href="https://medium.com/@0x0ece/read-offset-checkpoint-stored-in-kafka-aa093b60a98" rel="nofollow">https://medium.com/@0x0ece/read-offset-checkpoint-stored-in-...</a><p>- Installing Apache Airflow on CentOS 7, ~8k views (surprisingly 2y after this is still receiving 10-50 views week over week)<p><a href="https://medium.com/@0x0ece/installing-apache-airflow-on-centos-7-750c77b7aa35" rel="nofollow">https://medium.com/@0x0ece/installing-apache-airflow-on-cent...</a>
I noticed years ago that I didn't have as much insight as other people who were much more close to the problems I was interested in. Even on non-technical topics, there was this realization I was just more noise in a sea of noise.<p>So, ultimately, write if you want to write. But, ... be comfortable with the fact that you might just be noise. :-) If you find an audience, they will tell you what they find valuable or make requests on their own.
My work has a pretty strict Internet filter in place, but Wikipedia is fair game. I hop around random articles while my project builds, and I save things that interest me. Then I write about them later. No focus on technology or any specific area, just general trivia and curiosities. That's "worth" enough to me to keep motivation and interest up. <a href="http://chrisgermano.dev" rel="nofollow">http://chrisgermano.dev</a> if you're interested. I have about 100 Wikipedia pages on my to-write list, and 3-4 posts in progress.
The problem, I think, is in the question "worth". To me, it refers to a topic or idea that I would enjoy writing about, but one that others would also enjoy reading about. What's the point of writing if nobody reads any of it? I like to use Google Adwords' keyword ideas tool to find ideas that people seek out, then I pick and choose what I like. This is a great method especially if your blog is concerned with SEO and getting search engine traffic.
I typically write about things I'm learning about as a way to solidify my own knowledge. That or I write about something I wish I had known recently.