Just another tip on improving conversion rates with Google AdWords. When search words appear in a Google ad they are bolded. A good way to improve click through rate (and thus lower price per click) is to place keywords in the ad.
Sometimes it may not be practical to create 100 different ads and 100 different groupings. If you have similar terms which can use the same creative description, but you would like to have the title dynamically match searched keywords you can.
The syntaxt for Google AdWords Dynamic Keyword Insertion is {keyword: }
When you create the AdWords creative place {keyword: } in the first line and then fill out the rest of the creative like normal. Automatically your title will match the search terms which will improve click through rates. Please note that Google does not want this feature used on search terms which are mis spelled or otherwise break their ad policies.
When you use {keyword: } make sure you place a keyword after it so that search terms which may be too long or are not processed correctly still have an ad to show. I know this because I had one of my Google AdWords ads disapproved for not doing this. For me I would probably use something like {keyword:SEO Book}.
Some people will want to try this with a huge catalog of products and will lose money in the process. When products are widely varying you want to send the person to the specific page for that product so you must specify that as well.
This technique is likely to be most profitable to those who use it on smaller niche specific areas...the whole thing that makes Google so appealing is that you can customize every aspect of your ad and track every cent spent from begining to end.
Dynamic keyword insertion capitalization:
{keyword:} will make the title small
{KeyWord:} will capitalize all the words in the Google AdWords ad title.