It is widely preached that commenting on other people's blogs is a good way to build a reputation as an expert and to drive some traffic to your own blog. However, even if you have your hot list of favourite blogs because they are relevant to your business you are almost certainly missing out on commenting opportunities.
So... what's to be done ?
Answer - download Comment Kahuna free of charge.
And what is Comment Kahuna ? it searches for blog posts that rank in Google for a particular phrase. Once you’ve typed in your keyword phrase it will locate up to 50 blog posts on the topic you’ve searched for that are ranking in Google.