Writer's Fallout Shelter

I entered my poem in a contest at Poetry.com, a link I found at this site, and received a letter stating that it has been certified as a semi-finalist in the contest and they wish to publish it in an upcoming book tentatively entitled Eternal Portraits. My question is this; Has anyone dealt with this site and is it for real? I just write for the enjoyment of it and never really thought about publication so do not know anything about it. The letter looks legit, but with all the scams on the net these days it is hard to tell. Anyway they don't require an entry fee but would like to offer a discount on the book my poem is to be published in. Is this standard procedure or what? Don't know what to make of it and Kristy Mouse sent me to this forum to see if anyone else has dealt with this. Thanks.
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