Remember that you are creating a public document. If you say something incendiary about someone else, assume that it will get back to them. Better still, edit out such material. Try to make your HTML readable. I find this particularly difficult because I usually use programs to generate HTML rather than type it in directly.
Many people print out web pages for reading later.
When designing your pages, consider how it will look printed on white paper. Consider testing printed versions. I think header size 1 is too large for nearly any use. If you have something to contribute, to say or show, however, on one of those topics, then an interested reader will be happy to find your page. Try to contribute, not just to be there.