Every negative keyword that stops
your Adwords ads from being displayed
can save you many dollars. Some negative keywords are obvious
such as "free". Others can reduce the amount of traffic you pay
for that is not keen to spend money such as "discount",
"bargain", "cheapest" etc.
But a full list of negatives can really save you a lot of
cash and boost the ROI of your pay per click advertising
substantially. This particularly applies if you are doing any
geotargeting in your AdWords
campaigns.
The negative keyword maths
Remember the inclusion of a single effective keyword that
stops 5 clicks a year that would otherwise
cost you 50c each will save you $2.50. And all
it takes is for you to copy a good negative keyword list and
paste it into your Campaigns or Ad Groups - a job that takes
about 4 minutes.
If you add 50 good negatives you could save over $100. It's
that simple.
The best way to move forward with negative keywords is to
build your list up over time. Note that different negative
keywords may be appropriate for different Campaigns
or Ad Groups within a Campaign.