If you would like to improve your ads and improve your CTR (click through rate) in Google Adwords, you want to make sure your ads as target landing pages are as relevant as possible to what users search when looking for your product.

As Google is driving itself and its business more toward users, search marketers should consider that having a campaign that is user friendly is very important. There is a great article on SEJ on how to avoid google slap on your adwords campaigns.

The author focuses on user. Advises you to make sure your ads are relevant to your keywords, and the landing pages are relevant to your ads. And your products and services on your landing pages are what are advertised.

SEJ is a great website that covers all aspects of search marketing that includes both organic and paid search engine optimization and marketing topics. But if you are specifically looking for a PPC blog, it seems that SEO book has a nice PPC blog that I find very useful.