Blogging is a way of life and a very important way to build an online reputation.
And being the central portal for people to find information about the thing that you are passionate about is great.
Re-blogging other people’s posts is very useful and necessary, but you are really only being a content curator. (Thanks to Michael Steltzner from Social Media Examiner for bringing this term to my attention.)
Content creation is where you can really set yourself apart and establish yourself as an authority in your field.
Nothing wrong with being inspired by other people’s posts and new events (like changes on Facebook for example), but original thoughts is what will keep people coming to you and staying with you.
No need to think out of the box … there is no box.