This is post on why bloggers blog, and the effectiveness of their blogs. This post is directed at the Search Engine Optimization community but can be applied to all bloggers.
1. Is this blog unique? Does this blog provide any information that I cannot find anywhere else?
2. Is this blog original? Does it offer personal opinion instead of regurgitating or echoing views that other people share?
3. Is this blog essential? If I unsubscribed to this blog today, what would I lose out on?