Blog posts and forum threads are for users to express themselves, pose a question to readers, and generally write about whatever's on their minds. However, these should be in some way related to the Best Friends, even if tangentially. The excepion to this is the Fun and Games board on the Forum, which can be off-topic. They should have at least two sentences to justify their existence. Aside from that, formatting is up to the discretion of the user.
Behavioural rules still apply to blogs and threads. Insults, discrimination, harassment etc. will not be tolerated in this space.