Here's a familiar problem: You write a webcomic that's not getting nearly as many readers as you think it deserves. You're already sending press releases to the newsmagazines, you're posting announcements in the webcomic forums, you've joined web rings, and you've slapped your logo on every product Café Press offers. Still, your readership is modest, at best. You need a more aggressive marketing plan.
One problem: like most of us, your entire marketing budget comes from between the cushions on your couch.