Math blogging is a fun part of being a mathematician. For me, it's an aid to reading literature and an outlet for my writing prediliction. Blogging is cool because you write whatever you want without having to worry about the sometimes arbitrary and muddled standards of publication. But how do you do it? In this post I'll give six tips on math blogging that should help.
1. Don't worry about failure
Blogging is such a carefree medium that there's no reason to worry about failed or unfinished posts. I have a folder of such posts just in case I want to resurrect any of them, and it contains around 80 posts–or just under half of the number of all the posts published. These range from very preliminary to finished and polished, totalling about 48000 words, or about twice the number of words in Hampton Fancher's script for the movie Blade Runner. And you know what? It was fun to write those too, but in the end I decided they were not the right material for Aleph Zero Categorical.
2. Don't worry about sophistication
Surprisingly, it's actually fine to write about finitely generated abelian groups even though you're working on interuniversal Teichmuller theory. It's also fine to have a sophisticated blog. Mathematics actually needs much more exposition, so there's really no need to restrict yourself to certain topics because you think other mathematicians will look down on it.
3. Keep your blog focused
Pick a topic and stick with it. For my blog, it's math and related fields, like computer science and applications, though mostly I just write about algebra. There have been occasions where I've been tempted to post reviews of books I've read in other fields like biology but I've resisted because that was outside the scope I set out, and I doubt it would make sense to my audience. Writing outside the scope is a slipperly slope: first it'll be one or two posts on chemistry, and then pretty soon you'll be writing on bizarre topics like politics and South American mushrooms.
4. Update regularly
I require myself to produce one post per month. Only once or twice did that fail in the past five or so years, and on average I'm way above that. Not only will a regular update requirement keep you blogging, but it will keep your readers around. Most math blogs miss months, so I figure I'm safe.
5. Heed the format
A blog post is not supposed to be long, and people don't visit blogs to read proofs of the four colour theorem. I've definitely written posts that were too long, and in the end those were not so popular. Keep posts to a main idea, keep it under a thousand words, and your blog will be far more readable for it.
6. In the end, it doesn't have to be math
Weird advice for a post on math blogging right? But in the end if you don't enjoy math blogging, you might still enjoy food blogging or posting pictures of rocks.