Because some information in a blog especially personal ones can be sensitive, many people have asked me how to password protect their blogs. The answer is – it depends on what blog publishing system you use. Here are a few suggestions on the two popular publishing sytems I use.

Blogger Hosted On Your Own Web Host
Now we’re getting somewhere. Since you have full access to your own web host, you can install more secure password manager scripts. You can even make your blog paid access only.

WordPress
You can use several options here. On top of all those mentioned above, WordPress already come with a password protect feature which protects individual posts. But if you find the built in feature too simplistic for you, you can also use plugins like Registered Users Only (which password protects the whole blog). There are also plugins such as Post Levels that only allow access to registered users of a certain permission level.