Blogger solves this problem in different way, it has borrowed concept of labeling from Gmail, where you can create different label and associate with your post. To use this feature set up your account as follows:
- Login to your account and go to Dashboard
- Click on Settings under manage.
- Click on Template-->Page Elements Tab.
- Add a page element in the section you want to show the categories.
- Navigates to Labels in popup page and add to page(You can customize display name for labels)
- Now whenever you create post give a label to it and list of all label will be shown on your post