I heard this on a webcast interview and thought it may prove interesting. I am going to try it.

In the search for key words and phrases, look at forums about your product and read the questions. These will give you an idea of what potential customers might type in to a search engine.

Also, for moving up in ranking they suggested using the keywords/phrases in the titles of your blog entries. Your archived entries will be listed on the front page of your blog with the keywords/phrases.

I don't know if it will help; but it couldn't hurt.

ali