I was sitting here dabbling with new ways to get Google to help you create better themed pages and sites, and once again my brain honed in on Google Synonyms. Let's say that you did proper keyword research and came up with a keyphrase that you wanted to target. You created your page, linked to it from well-suited and frequently spidered pages so Google would pick it up fast. The page is on a site that is supported by contextual advertising through Google AdSense, but for some reason the shown ads are not related to the general theme of your site or the specific theme of the page. You thought that the theme of your page was "PPC" - as in "Pay Per Click", but ads for "Linux" and "Mac" kept showing up. So where did you go wrong? Well maybe there's help to get from Google Synonyms, which I still believe relies on the AdSense ontology from Applied Semantics. You search for Google synonyms by placing a "~" in front of the keywords you are searching for. Try searching Google for [~PPC] (without the brackets) Notice that some of the returned results have certain words highlighted. These are the keywords that Google consider synonyms for "PPC". Within the first 20 results you will notice the following highlighted words Linux Mac mac's PowerPC Notice how the last word explains why Google is making a connection between PPC and Linux (since PowerPC is a popular platform for Linux). Now wouldn't it be nice to know what other keywords Google consider to be synonyms for "PPC"? - You might be in luck and find a keyword to support the theme of your page. What if you could add just one keyword to your page so Google would "detect" your theme properly and serve ads that would make sense to your target audience. One way would be to go through page after page of search results and look for highlighted words, but isn't life just too short for that? A much quicker way is to use the "-" modifier from Google which let you exclude words from a query. Try searching for [~PPC -PPC -Linux -Mac -PowerPC] - Google doesn't like searching for apostrophes, so no need to search for [mac's] New highlighted words will appear: CE Windows CE Pocket PC If you try to eliminate these new words as well, Google will return "Your search did not match any documents". The good news in this case is that you have uncovered all words that Google considers synonyms for "PPC". The bad news is that unfortunately none of them had anything to do with "Pay Per Click". But you might have more luck than me and find an additional keyword that you didn't think of yourself. A keyword that will help Google to serve well targeted AdSense ads on your page. Hey, the worst that can happen is that you get a list of keywords you must avoid at all costs when creating your pages.
If you put ppc, ppc managment, ppc ads etc I'm sure that your ads will be related to pay per click. Keep in mind that there are other words that are related to ppc, like maybe online marketing... Try to find sites that have ppc ads showing up (dp?) and see what keywords trigger those ads. I hope you'll succeed. p.l.u.r.