I'm not sure why you were in such a rush to disable it though. You didn't SPEND any additional money and got 10,000 impressions on contextually relevant websites. Even though you didn't get any clicks, you basically got free "banner" advertising on a variety of website in Google's Content Network.
When using the Content Network, I would definately recommend creating seperate campaigns (disable the Google and Search networks - leaving only Content Network enabled). That way you can control the Max CPCs you are willing to pay. I would set them LOWER than what you pay in the Search Network, as the traffic is usually more curious than in "buying" mode.
Again, if you aren't getting clicks, what do you care? You aren't paying for anything until you get a click... (assuming this isn't SITE targeted)
assuming you are targeting correctly (you ctr says differently), keep in mind that creatives are a competition for attention - position yourself with relevancy and uniqueness, not loudness (bold, blinky). keep this analogy in mind... you walk into a room, perhaps an art gallery (or a lab, or a store, or living room - chose a room that's connected to what you're selling) and there are roughly 10 other people scattered about, you immediately notice the girl in one corner because she's wearing a neon yellow felt hat and a pink jumpsuit... she's caught your eye, but you quickly judge that you really don't want to "click" with her... as you continue to scan, you make judgments about everything you see, even if you don't explicitly focus on each individual or object in the room... in your mind's image of that room right now, write down the adjectives of what interests you most. those are your banner ad design goals.
here's one example of those goals... as you scanned that room, you undoubtedly looked for people first, not the objects like furniture or the flooring - it's our nature to observe people first. make it a goal to always have at least one banner in your quiver that has a human face on it, my internal studies show it makes a very significant difference. the human eye is attracted to other human eyes, it's how we greet in person before we examine further and begin to make judgments of interest - it's how we connect and notice people.
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there are subtle ways to stand out without the neon hat routine, one is to be different than all the others. video ads are currently one such opportunity. i don't personally know anyone else using the video ads on google's content network, but they do very well for me. perhaps the lack of others doing it is why i get such good play rates and clicks at a very low cost per visitor (for a very high margin product). not every theme is well suited to video, but it's well worth the effort in many areas (especially if you own video content already). G's video ads are like banners ads on steroids - if you've found success with banners, i strongly suggest you give video some thought.
i also hear people say that banners don't work, that's just not true. experiment with loads of banner variants, G's system makes it easy to do so, whether your content and search are split into separate ad groups or not. i'd urge people to break their banner mold, do something different. admittedly, this is hard to do becasue of habits and ownership traits we develop as humans. farm out a few new banners and see what others come up with. allow those folks lots of creative freedom and see what comes. once in a while, when farming out creative, do something to prevent the artists from conforming to your current style - like don't tell them what website the ads are for. in any case, farming out creative is inexpensive and inspiring, new ideas flow into your ad inventory coffers quickly. i like the elements section of DesignOutpost for banner creation experiments, but there are plenty of sites like it where banner artists will chase new designs for you and you only pay for those you choose to award as the winners in the creation competition.
i could on for days... :-)
here's the kicker... so can you.
the richness of opportunity waiting for advertisers in the content network play is an amazing thing to behold. keep playing in it, the feedback loops G has in place will practically force you to try new things as experiments, and that's when it begins to really become fun. your failure you've had here should be viewed as one more step taken, towards your eventual success. so keep walking, there's fun just ahead.
[edited by: RhinoFish at 1:27 pm (utc) on Oct. 2, 2007]
Just a recommendation...
Keeping the networks separate allows you to control the content network's ability to consume your entire daily budget in a blink of an eye.