netmeg - 2:29 pm on Jun 1, 2009 (gmt 0)

Content network matching is by theme, and not by keyword.

Name your ad groups with your theme, and only put a handful of highly relevant keywords or phrases.

You don't need to worry about match type, because, as I said, Google places your ads by theme.

You could also try site placement if there are sites you specifically want to advertise on, but that does tend to be a little more pricey.