Q: What is a blog?

Q on Yammer:

"now what about the question - is an online journal the same as blog?
although technically a blog is a weblog, blogs have grown into a
public domain where people discuss and banter over a certain topic or
discussion raised by the blogger. an online journal on the other hand
could be a dear diary or a "whate happened to me today". any thoughts
on this?"

A:

a blog is a blog
you can use it to share
or you can use it to care
you can use it to joke
or you can use it to poke
you can talk to other people
or stay alone in your steeple

its just a way to go 'bla bla bla'
and the only difference is
WHY you go 'bla bla bla'

(apologies to Dr Seuss)