I'm not aware of a promotion that gives a free website for a year (I could be wrong, though) but I do know that you can get a free 30-day trial of GoCentral, which I think is what you're talking about. You can get that just by going to the GoCentral section of the main site and setting it up.
If that's not what you're talking about, I'd give support a call or hop on a live chat and ask some questions.
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