An Open Diaryyy

Ever wondered what a blog is??? Blogging nowadays has become more of a fashion and passion. There are some very active bloggers and also active bloggeees ( thought bloggee is brunette version of blogger- the blonde:P). My friend R after being an active bloggee for considerable amount of time, decided to embark the blogship and become a blogger. He was successful to some extent and was happy that he got some rave reviews until he stumbled upon one block.... My friend C who is not soo much into this Hi-Fi business of surfing ;) asked My Friend R "Arey what is a blog ra??" with me being the third person in this banter...I couldn't resuscitate after receiving this jolt.. Can some body be so naive to not to Know what a blog is???? I knew the question was for Mr. R but what if I were to be made the target... The question was not intriguing but was made so, mainly because it had to be explained to someone who is so naive(Layman) and inquisitive.. But Thank GOD Mr. R has come up with an Answer which dumbfounded me for a moment...."Emi ledu ra Blog antey oka Open Diary anthe" (for non - telugu folks "Blog is nothing but an open diary")...As such my mind is a paradigm for convoluted answers but this Answer made me think think and think.... Is Blog really an Open Diary as he claimed??? With due to regards to the original closed/confidential diary--Can we peep into someone's diary even though we know it doesn't contain any confidential information?? Can we comment on their thought process?? It is all upto admiration but can we really criticize the way people think about ourselves?? .. There were several such questions which pounded my brain relentlessly from then on...But really is there any other way to explain what a Blog is to a layman (may be to my dad :O)