The problem of keeping a blog as expert consultant

I have realized that there are may ways to keep a blog.

One goal is to write something everyday regardless of whether you have anything to say or not. That is not the path i I like to choose.
So I like to turn here and write about things that;

  1. i find interesting,
  2. i think someone else might have interest in, and;
  3. does not violate reasonable confidentiality agreements with my customers.

Unfortunately the third is quite a limiting factor. Sometimes the most interesting things at hand I would like to write about is something that my customers do not wish to have published on my blog. And that is something I have to respect.