I see. I've been thinking of an audience that likes video games and poetry, which is a particularly small group, but targeting the broader gaming audience opens up more opportunity. And running a blog for some time would both create a readership base and answer the question about the feasibility of publication.
Now, another thing that I'm not so familiar with is the rights to using certain material such as licensed characters, console names or game titles, both from a writing standpoint and a design standpoint. Obviously, putting Mario smack on the front cover of a book wouldn't fly. But how about mentioning him directly in a poem? And that goes for blog design too. I can't just rip images and put them there, but If I make a blog, I'd say it has to have the feel of a place for gamers and not just be a bunch of words.
Thanks for all the replies. They have all been quite helpful.