Content Network Poor targeting

I've been running the Content Network a few days, and ran a Placement report, and notice my ad appearing on pages that do not have a single occurrence of the key word that I chose. For example, let's say my key word was 350z , I look and see that my ad appeared on a site that was about cars, but I do a control f to search the page for '350z' and the word is nowhere on the page. I'm wondering why my ad showed up here? Maybe the meta info of the page perhaps? Any thoughts on improving this? I've read that negative kw's are handy, but I can't put in a negative kw -cars as there are going to be many sites with the word cars and 350z where I would like to appear. Also I was told my google to add more keywords as that would help the software better target...

 

Content network works on 'themes', so putting more keywords in your ad group that help to 'refine' the theme will definately help. (but no more than 50)
Quote - On Google's content network, ads are not triggered by individual keywords. Instead, all the terms in the advertiser's keyword list within an Ad Group are taken into consideration to determine a theme for the Ad Group. Google scans the content of the web page and matches the content with Ad Groups matching the theme of the page

Also, of course, you can block the innappropriate sites

 

content network is not based on keywords. Instead you are bidding on themes and topics.

So if you said

350z

but also included

cars
car reviews
about cars


then you will simply be shown on anything that has to do with cars. None of the keywords you place in your adgroup have to be present on the page, it just has to be about the topic of your keywords

I hope this helps

 

Thanks for the adivce, so why no more than 50?

 

Don't run the content network on keyword targeted campaigns.

Instead choose the sites that you want your ad shown on by running placement targeted campaigns which is the best way to advertise on the content network.

 

You can have more than 50 as long as its all related enough for google to define a theme for it. If you diversify your keywords too much you may end up getting your ads shown in weird places. Generally 20-50 themed keywords is enough.

 

It's come up here before - they only use 50
http://forums.digitalpoint.com/showthread.php?t=557423&highlight=50+keywords

 

ipnomad has got it I think. PTC sounds like the way to go. Thanks all.

 

Just one more thing, Whatever happens on the content network, whether this is a placement targeted or just opting in to the content network in the most common way, it does not affect the QS of my search network campaigns right?