Many actors on The Office maintain blogs, some of which are written in character and others as themselves. NBC also publishes blogs written in the personas of characters on the show.
The first of the character persona blogs created by NBC is Dwight Schrute's Schrute Space blog.
Initially, the entries were written by actor Rainn Wilson on the set. Eventually, the task of writing Dwight's entries was given to the Office writing staff.
After the introduction of Creed's "blog" in the episode The Job (really a Word document set up by Ryan), NBC created a blog called Creed Thoughts, written in the persona of the character Creed Bratton. The initial blog entry is a copy of the entry seen on Creed's monitor during that episode.
It is generally believed that the online Creed Thoughts entries are written by the Office writing staff.
Meredith's Sex and the Electric City
In September 2008, NBC launched a new blog written in the persona of Meredith Palmer.
It is not known who writes Meredith's blog.
Actor Jenna Fischer maintains a MySpace for herself. Some of the blog entries are written on the set while she is working background in a scene.