Simply put, “blogs” are just personal websites or digital web logs.  There are various related terms such as “blogosphere,” which refers to the universe of blogs and bloggers.  The “blogerati” are sophisticated blog authors and readers (sometimes referred to as “blogophiles”).   If you send a question through the blogosphere in hopes of help you are “blegging.” A “credentialed blog” is a blog authored by a credentialed member of the news media or analyst community. 
 “Vlog” is short for “video blog”, a publishing platform for the distribution of videos. 

A “flog”, on the other hand, is a fake blog.  Flogs are usually created by agencies with a pretence of being created by consumers.  They are often revealed to be false by real, and vigilant, bloggers and, although appealing to PR and marketing professionals, can be extremely problematic. 

There are, in addition, “splogs” (also called zombie blogs), sites created by spammers and filled with keywords, news and keywords with links to sites.  Splogs are created to increase page rankings and site traffic.

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