Lately Ive been thinking about trying a few other advertising mediums. If heard a little bit of buzz about social networks and myspace etc etc But Im not to sure about these concepts being a long term or even credible model for advertising.
Yes, it's a tough one although most are contextual and remember the providers want quality! It might be worth a test for you. What does your stat keyword analysis tell you about the kind of people hitting your site. Do you need more people from one target group. Articles are hard to beat you know. Also, you might want to try an ad or newsletter exchange if you know people in your niche. Good luck,