I really like the design, but I didn't notice the dates as all on the first view. I did find them when I specifically looked for them though they still didn't immediately pop out at me. I think it's because the rest of the poster flows together really well but the dates don't seem to "attach" to anything else, almost as if they were a quick last minute addition by someone who noticed no one had bothered to add them in anywhere else. If the dates were incorporated in to the CONDFW XII part some how it may scan better. Something like "You'll find us at... [big words]CONDFW XII[/ big words] ...on February 15-17, 2013".