As those of you without ad blinders may have noticed, SEOmoz has switched out our paid banner ads in favor of some Amazon sponsored links to books (and possibly other materials in the future) that we recommend. The banner ad model appears to be successful at sites like SERoundtable, SEWatch, Threadwatch, Blogoscoped and others so why the switch you might ask. The answer lies in the vlaue the ads were providing.

Since we re-started the ad program in late March, we were collecting between $1800-$2200 in total revenue each month from advertisers. Yet, the clickthrough rate was exceptionally low and it was my impression that visibility was also low. Thus, I felt the advertisters weren't getting their money's worth, despite receiving highly targeted banner impressions at relatively low rates for the industry.

I also perceived that the ads were hurting our internal brand a bit. Several of the ads' subject matters had aroused some (largely negative) commentary via email (and in person) around the industry. The ads also caused some new readers of the site to make assumptions about the type of resource SEOmoz is. New visitors to SEOmoz from sites like Digg, Wikipedia and Slashdot commented on the ads in a way that made me believe we were leaving external links on the table by continuing the banners. We'll see if this new model is better receveived.

Fundamentally, SEOmoz is a very different kind of blog from most. The parties we're serving are more than web-savvy, they're ad-aware. The level of scrutiny and attention most of us pay to advertising on a site far exceeds that of the normal surfer, but it doesn't translate to clickthroughs or branding - just the opposite in many cases. Our unique audience here at SEOmoz would probably rank lowest among all active web audiences in terms of CTR or branding effectiveness. The only metric we're good at is ad memory retention (i.e. - "Text-Link-Ads... yeah, I think they advertise on SEOmoz").

If you've got ideas for SEOmoz's blog monetization (and the content throughout the site), please let us know. I'd also love to hear your personal experiences with blog advertising and success rates.