I am a big proponent on targeting long tail keywords. Sure a single long tail phrase may bring in less traffic than a single short phrase, but long tail keywords are so much easier to convert. The screenshot below shows just how powerful long tail SEO is. This is long tail "organic search" traffic that came into one of our sites for a campaign we did for a client. As you can see from this screenshot, this campaign drew in 8,424 visits from 8,186 different search phrases in 1 month. Yes you read that right - 8,186 different search phrases all from long tail.