Mon Jan 07 13:02:44 PST 2019

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[abc tires] $0.75 10.1% 2.32% $32.01
abc sports tire $0.74 12.4% 2.91% $25.29
abc tire co $0.59 15.1% 2.70% $21.73
[a b c tire
company]
$0.56 38.2% 11.11% $5.03
abc tire
products
$0.74 17.3% 22.22% $3.30
Misspellings $0.21 3.6% 1.82% $21.37

Adding modifiers will split up the traffic volumes to make some terms seem more
profitable than they are and make other similar permutations seem less profitable
than they are. The math from the above campaign was compiled over a year with
hundreds of thousands of ad impressions to help smooth out some of the
discrepancies.
You have to consider the cost of building and managing the account when building
out your keyword list, but I tend to like using various matching levels and modifiers
on my most important keywords.
Tools to Create Large Keyword Lists
Tools.SeoBook.com offers
? a free keyword list generator that allows you to create a list of keyword
permutations based on a list of core keywords and keyword modifiers
? a misspelling and typo generator tool
? a keyword list cleaner to filter out bad keywords
Pay-Per-Call
Google has started testing pay-per-call. For some businesses, pay-per-call will not
have much of an effect, but high-end local businesses (legal, loans, real estate, etc.

will find their competitive landscape drastically different in the next year.
Google has also launched an offline Google AdWords ad manager software to
help advertisers manage their campaigns.
Pay-Per-Action Ads
Google offers ads that are distributed on a pay per action basis. Some of these ads
are regular text links that can be integrated directly into the page copy of the
publisher.
Google also allows you to set your regular bidding based on a maximum desired
cost per action, but this tool likely increases your cost per conversion and most
advertisers should be able to do a better job manually managing their bids.