Here are some tips about blogging:
- Write to be helpful.
- Be brief.
- Tell a story.
- Connect others.
- Don’t overthink it too much - it’s a blog, not a dissertation.
- But be thoughtful.
- Don’t be mean.
- Publish often enough to build a relationship.
- But be mindful of your audience’s time.
So, I think a common blog is a good start, and in case you'll like it - go on with your own one ...