I have subscribed two months ago to Google AdWords and it seems to me that the service is trying to make money from my account by blocking my keywords for underperformance (this is charged with $5) not by providing clicks to my website.

Regards,
Claudiu

Yes, this is simply how Google AdWords operates. Obviously google wants to keep the ads in its search result pages on target and links that searchers would be interested in and find useful. If your ads aren't being clicked on, google doesn't feel they are relevant and should be listed.

What you need to do is change your keywords or your ad write-up to be more relevant and entice people to click. What I do is create a new Ad Group for each and every of the 90+ forums on DaniWeb. i.e. I have a PHP ad group, a Security ad group, etc. Each ad group contains keywords specifically targeted to that group. And ads that are directly related to each ad group and click thru to the actual forum pages.