Blog commenting is a good way to build backlinks. It also brings some quality traffic to your site. There are many ways to find quality and relevant blogs for commenting. Google Alerts is one of the services which can help you do that.
“Google Alerts are email updates of the latest relevant Google results (web, news, etc.) based on your choice of query or topic.”
Just like using Google Search, you enter some keywords related to the content you want to get and create your alert. Every time there is a new post about that topic around the Web, Google Alerts will send you an email containing information about the post. Then you can visit the post’s link to read and place your comments.
You have many options when creating your alert. You can choose the source type of search such as everything, news, blogs, video or discussions. You can also choose how often Google Alerts will send you email and the volume of the search results.
Google Alerts automatically searches blog posts for you. It helps you concentrate on the posts with keywords related to your niche. I’m currently using Google Alerts beside other tools to build comment backlinks. It helps me save too much time. I think it is a helpful tool you should check.