I don't have one, but from time to time, I'm thinking about starting one, but usually I don't want to do things half-heartedly and creating good content is a time-consuming activity. I have the utmost of respect for those who manage to do that in their spare time. Lately I was thinking about the approach of someone I know takes to his blog, he regards it as his "scribbling paper", where he writes down the result of his side-projects/experiments; maybe that is a suitable way to frame it when you cannot manage to create content frequently.
When it comes to finding other dev blogs: my twitter timeline is the main channel for randomly discovering all those gems that are produced by so many great folks.
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