Brian Clark over at Copyblogger beat me to the punch. He wrote the ultimate guide to doing keyword research for your niche. It’s long, but well worth the read.
So why would a blogger care about keyword research? Basically, by knowing what people are searching for, and by knowing how to attract new readers through search, your blog can have a much bigger impact, much more quickly.
Keyword research also helps you to create structure for your blog. If you know the most popular topics that people are interested within your own niche, you can focus most of your content in that direction.
Keyword research is all about giving your readers what they want, so make sure to read Brian’s article for a great introductory tutorial.