You can generate a lot of traffic with long tail keyword titled blog entries.
Like "Why is my poop green?", bad example of course.
So where does green poop come from?
There are mainly two causes for having a green bowel movement, your diet and fast evacuation. Eating foods that are green (such as vegetables) will make your feces a mossy green, and eating lots of lollipops or Jell-O will make it a brighter, vivid green. Eating foods rich in iron is another cause. The more you eat, the more greener your poop will be!
i'd use a keyword rich url (not necessarily a long tail) and then get caffeinated content to do your long tail stuff - or you could use a keyword replace plugin and insert your long tail stuff after