There's no specific spirit to blogging, and that's probably the point. It's the freedom to be able to publish whatever you want to say on the Internet for anyone in the world to read. Now that's freedom.

Then some bloggers gain an audience, either because the content of the blog is interesting or their friends and relatives are curious and want to read it. Sometimes knowing you have an audience affects the content of the blog and sometimes it doesn't. Some people can blog like no one is watching, as it were.

A really interesting use of blogging is by celebrities, often misquoted or misrepresented by the press, who want to set the record straight in their own voice much to the horror of their PR reps. With a blog they can get straight to their audience. Examples are Mark Cuban and Billy Corgan.

If your intent is to get down your own thoughts despite your audience, that's cool. Your blog then becomes a searchable and highly accessible notepad. But if you're trying to communicate an idea to your audience, you have to empathize with them. You need to explain the back story, expose acronyms, technical details and confusing parts. Try to make your posts explain themselves, even if it's just linking to old posts or other places where people can read up on specific background information.

This kind of thing takes a lot of work -- I'm not that great at it either but I'm working on it. It takes more work to prepare a post this way, sure. But doing it will make your blog better for your audience.