Just one keyword
I launched a new German website recently with only 3 posts. For one post I did a keyword research with the free keyword tool only. I had only one keyword and the keyword was about a very specific issue that people face in Austria. I posted it and was immediately on page 2 of Google for that specific keyword. Not bad I thought but probably I won't get any hits. What a surprise - yesterday I got an external comment on it. I was so excited. It's such an encouragement to go forward.
Sometimes one keyword found with the free keyword tool is enough;-)