For Gary and those that want more information about what a blog is, see here:

http://en.wikipedia.org/wiki/Blog
A blog (an abridgment of the term web log) is a website, usually maintained by an individual, with regular entries of commentary, descriptions of events, or other material such as graphics or video. Entries are commonly displayed in reverse chronological order. "Blog" can also be used as a verb, meaning to maintain or add content to a blog.

Many blogs provide commentary or news on a particular subject; others function as more personal online diaries.
http://www.merriam-webster.com/dictionary/blog
blog
Pronunciation: \ˈblȯg, ˈbläg\
Function: noun [or verb - cc]
Etymology: short for Weblog
Date: 1999

: a Web site that contains an online personal journal with reflections, comments, and often hyperlinks provided by the writer
I'd say the difference between a blog and a 'regular' website is that it's created by an individual, and is a personal site.