@brnielsen44: Duplicate content only exists within a single domain. Having the same thing posted between multiple sites is called syndication and Google likes syndication because it, in theory, shows popularity. I can assure you syndication doesn't hurt your scores one bit. If it did, I would be out there syndicating my competitions' content like crazy to make their sites absolutely bomb in the SERPs. But Google knew people would do things like that and there are essentially no ways to harm your competitions' websites which also means there is essentially no ways to harm your own site with off-page tactics.
Short answer Craan: You're fine to post your content elsewhere. If you're excessively worried like some people, just change it up a bit.