Some people like to use org2blog/wp-mode when they are working on their posts. The trouble is that they have got to start the mode manually every time. That is because Org2Blog files are plain old Org-Mode files. So there is no obvious way to automatically enable org2blog/wp-mode. There are a lot of ideas on how to automatically enable it and this is the one that got implemented. Here is how it works:
• Add org2blog/wp-org-mode-hook-fn to org-mode-hook
• So that org2blog/wp-mode is automatically enabled when #+ORG2BLOG: is present
(add-hook 'org-mode-hook #'org2blog/wp-org-mode-hook-fn)

• Add #+ORG2BLOG: to your file