Similiar to the word plagiarism, but instead with blogs. The person could copy the idea, theme or the whole text of the blog. Usually used to increase a person's blog popularity.
Bob: Damn, Pete Wentz just wrote about ponies!! Ill write todays blog on them too!
Plural noun: bloggers who flock to a news story or event the way paparazzi flock to celebrities.
To the delight of the blogarazzi, there are new allegations that the government misled the public about the extent of its warrantless wiretapping program.