The quality score mechanism is widely implemented in all major PPC platforms. This has made the concept of CTR or click through rate even more important than it was before. Broad match and advanced matching options usually allow all your services and products to be found on the internet. The best part is that the phrases you thought never existed can also be search terms and phrases that you can show on your ads.

Here are some superb tips to follow in order to build negative keyword lists.

Personal data:
Remember that your personal analytics can be a superb source of negative keywords. Here you should look at your organic data in conjunction to the PPC data. You need to print out a monthly keyword report and highlight negative terms.
Google’s keyword tool:
Don’t hesitate to use free google tool. Paste in your keywords and make sure you select the ‘use synonyms’ checkbox.
Organic search results:
Try to set your search results to display 100 results. Visit websites and take down negative keywords.
Adsense and other ads:
Do a search for your keywords. Your keywords should not be displayed for keywords related to their product.
Thesaurus:
It is very important to use a thesaurus. It will expand your Negative keywords list to a great extent and also expand your main keyword list. Also try to find variations of your variations.
Industry related:
Make sure that you use your own knowledge of industry and product.

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