I think it stands for web log, where people put their personal thoughts for people to see. I could be wrong, I'm not into the new internet fads.
Short for weBLOG, it's a place for people with huge bellies go and place unimportant comments about their insignificant life for us skinnier people to read. You can start one at google's http://www.blogger.com/ . Careful. Blogging may take time away from reading CC.net or CF.net threads.
A blog is a public form of masterbation. You probably have one if you're between the ages of 11 and 24 and you believe that what you think actually matters enough that thousands of people want to read it. Remember homepages with annoying audio, animated GIFs and horrid backgrounds. Back in the mid-90's when people first discovered the internet? This is the new incarnation. I swear, bad blogs are the plastic pink flamingos in the front yard of your neighbors on the internet.
Actually, not completely true. Blogs have not only become places for mental masterbation (very true in many cases), they have also become the standard for community-based websites and have even found their way into the corporate world. Bands and artists use them to tell people what they are doing on the road. Reporters have blogs posted on news sites for "play-by-play" discussion of events they attend. Political online communities use them to relay information about news items, events, etc. Even some corporations allow some of their sales force or people in their tech department to post running blogs for customers. It's also pretty common for people with technical expertise to have blogs that address technology and computer development issues. And, of course, that doesn't really even address people who use them to communicate what they are doing with their families - especially soldiers stationed overseas or family members located thousands of miles from their home. So, while they certainly can be nothing but "blah, blah, blah, blah, blah..." they have also come to serve a pretty useful purpose for a lot of people.
I have found blogs deliver on the unintentional comedy scale. For instance, GOTHPUNX0R69's parents grounded him last weekend, so he's missing DaIzEeGrRrL^_^'s party that is going to feature feline sacrifice. SpockTrekker is giving the keynote at the TrekCon this year and the RomulanPhurriePhreaks are not at all pleased; you see, SpockTrekker got their website shut down because in a picture posted on the RPP Geocities site, one of the RPP's phalluses was visible through their skunk suit, thus a violation of Geocities TOS. Then,