This is just awesome! As you can see you can find posts or homepages. You can also select the date it was published and order it by date. I've manually checked a few of this blogs and they are mostly never posts and are not spammed yet. Just use blog search and select pages, then scrape the results and put into your favourite commenter. Now my idea is this: Now let's say you want a list of 100k blogs. You can't scrape all of them at once since google won't allow you to see more than 1000 results. What you can do is set a timer to parse the results let's say every 10 minutes and set the search to only show results in last 10 minutes. That means you will get new blog lists every 10 minutes. There were 712 results in last 10 minutes for keyword "Weight Loss" when I wrote this. This means you could get about 100k lists of blogs in one day for this keyword if you used this technique. But you would need to remove duplicates, etc.