Google AdSense Tips: Part 1

Google just released a Newbie Central for their AdSense program, those ads webmasters can include on their site to earn money for every click on the ad from a visitor (if you're using the program, part of the advertiser budget will go to you, and the other part to Google). I wanted to add some tips from my own experience:

1. Ads can work well in-between other stuff. On a games site of mine, some of the games don't contain ads next to the game area; the AdSense ad will only be shown in-between game rounds. This is the time the visitor is not concentrating on performing a task but might take a small break, and be open to the option of visiting new sites.
2. Put too much emphasis on AdSense and your site may be linked to less. The more available space you dedicate to AdSense on your site, and the less you differentiate between ads and content in your design, the more money you earn with the program, right? Not quite. While pushing the AdSense may result in short-term gains, it might also convince some visitors that the site is too crowded to be worth visiting again. And some of those visitors may also be bloggers or other people who might otherwise help to promote your site with links to it. And the less your site gets linked to, the less traffic it gets, meaning AdSense revenues may go down in the long term.
3. Even if you get huge traffic, the AdSense income from the site is more dependent on the site type and audience. Google targets AdSense ads automatically to the site content. Or at least, it does so ideally – but some types of content fare better than others with this targeting. I noticed for instance that AdSense does better on a games site than on a technology blog. I also heard people say that AdSense does quite good on product oriented blogs; say, one post solely about the iPod; another post solely about Gadget XYZ, and so on.
4. Image ads can be relevant and work for you, but they might also apall some visitors. Google's AdSense program gives you the option to choose between a couple of different ad formats. Two main groups are text ads vs text & image ads. When you choose the latter, Google will deliver what they deem works best for your content (or so one would hope, and it would be in Google's best self-interest to serve you the best possible ad, it seems).
   
   However, Google doesn't really know your layout preferences, and they don't really understand when your audience thinks ads are "too much"; and considering image ads include Flash animations (which you can't disable, once you go for image ads), Flash animations may well push some people away. One thing you can do is to only show image ads in areas where they don't disturb the content, e.g. at the end of posts. Also, you might want to listen to visitor feedback on the ads being served; I received emails before that the blinking ad on this or that site made a person want to leave the site, at which point I blocked the specific advertiser via the AdSense Setup -> Competitive Ad Filter option.
5. When it comes to context sensitive targeting, you can increase or lower the importance of certain parts of your page. To help Google find a matching ad for your content, you can use the HTML comment syntax by encapsulating more important parts with
   

   <!-- google_ad_section_start -->
   ... your important site content here ...
   <!-- google_ad_section_end -->.

   Or, to lower the importance of a section, use:

   <!-- google_ad_section_start(weight=ignore) -->
   ... your not so important site content here ...
   <!-- google_ad_section_end -->

   (Google notes that it may take up to 2 weeks for this change to your site will be taken into account by the AdSense.)
   
   What if your site doesn't have any good matchable content to begin with, though? Say, the page just includes an image. Well, for the reasons of search engine optimization but also ad optimization you might want to consider using at least a descriptive title, an explanatory footer containing the important keywords or keyphrases (the kind of footer that actually helps the human visitor by explaining what the page is about). In the case of image content, reasonable alt and title attribute texts should be used as well.*
   
   *Whatever you do, don't resort to "keyword-stuffing" as it doesn't help your visitors and may get your page ranked lower in search engines.

Read more: blogoscoped.com