with blogs, i was able to express my interests in music, movies and travelling even without money to spend

I tend to disagree. "Blog", now a days, is most associated as a separate entity than journals or diaries. While some people still do "blog" on how their day went, I would suggest that if you really want a place to do that to use a service like Live Journal, which is made more specifically for that, allows you to have 'friends' which can comment in a more controlled manner than blogging allows. In fact, it works in forming a community instead of a lone person.

Just my 2 cents.

Through blogs, I can also share my special interest as well as my views and thoughts for a certain topic. It's also part of my learning habit where in I can get more ideas and useful information by reading other's blog content.