Huckabee's Status and FairTax

So after six states have had their primarys, Huckabee has the third most amount of votes with Mccain and Romney ahead of him by atleast 15 votes. I was looking at an article on Comcast that mentioned Huckabee's support of the FairTax which was a new term to me. I think I've heard it before but it didn't stick in my head. I did some active searching out of the meaning and looked it up and it seems to be a good deal. I'm still trying to understand it all but what I got out of it so far is that instead of the 30 percent sales tax that is currently in place, there would be a 23% sales tax as well as lots of other nice rebates. It also says that those below the poverty line will not be taxed at all. Also FairTax would supposidely make US products worth more on the international market making the US more competitive in the international market. I'm honestly not sure how to understand all this but this is what fairtax does. It seems like a good thing since it seems to lower the amount of things we are taxed on, for example on my pay checks, that would be nice.