As ingredible has said, making IM and even general marketing blogs is hard - they are a dime a dozen.
However, it is a lot of hard work involved into it, which not everyone can or will take on. Depending on your location, the SEO part will be harder or easier, but only you can know that. If you can't be the first in line, which there's a 99.9% chance you're not, then work your way around it. Have a competitive differentiation, so to speak.
The Commander