[scythe]

I am new to blogging and I have heard that people do it for a lot of reason... one could be as a source of revenue, another is to blog as a compliment to their websites. Just want to ask on how you start it out. I mean, there are tons of ideas and topics that one can discuss in his blog but I would like to start one that is focusing in just one topic, I just don't know which topic as there are tons out there. How do you decide on which idea to blog about and how do you decide to blog about it. I mean, do you use other blogs or articles as a resource or you just say what your heart desire? Cause I have seen lots of blogs with the same topic with almost the same topic, as if the idea or the thought of the article were just spinned. Is it worth it to blog about something that someone has already blogged about?