"At the simplest level, a blog is just a gift exchange. People you may never meet from countries you may never visit, show up at your blog and give you the most precious resource they temporarily have in their hands – time. Whether it’s 30 seconds or 3 minutes, they offer you something really special, minutes of their day that they will never get back.
In return, you give them something. You give them an idea. You give them a photo of a sunset you loved. You give them your analysis of a recent policy change in the government. You give them something that is important to you."
Source: 1 secret I’ve learned about blogging, via @problogger.
This Google video shows that it takes about 2 minutes to start a blog on Blogger.com. Creating a web site has never been easier.
Why Do I Blog?
How to write a medical blog and not get fired?
Why you should write a blog for yourself rather than for a shifting audience