I am not doing double-posting! I’m not THAT bohliao, okay. LOL.
Anyway, the posts are automatically ‘fed’ in from my blog, because Facebook allows you to feed your blog posts, among other services, into your profile. How to configure this:
When at your Profile Page, click on the ‘Settings’ Tab just under your ‘What are you doing at the moment?’ input field. Follow the instructions after that.