What I've done is to have a blog at www.giftcertificatefactory.com/blog - Each blog post was made after keyword research and attracts quite some long tail traffic.
However, I must say it's quite a boring job to do that (I'm not THAT passionnate about gift certificates, to say the truth). You might be fine outsourcing content creation, but for this first site, I wanted to know what it took to do it.
If I'd do additional content creation, I'll most probably outsource it :-)
Thanks for the additional ideas!