ok.. i'll bite. how the heck can one find a list of sites via google?? but to your point, we're looking at creating a couple of blogs, but wanted to figure out

ok.. i'll bite. how the heck can one find a list of sites via google?? but to your point, we're looking at creating a couple of blogs, but wanted to figure out what one can reasonably expect to earn from a blog. To that, we figured on creating a survey/questionaire that would (hopefully) be completed by various blog owners. Which would necessitate that we have a list of bolggers/blog sites to contact. So, we're looking for a list of 400-500 bolg sites from the "long tail" that we might approach to complete a short survey. We're more than willing to share results of the survey if we can obtain/access a list of the blog sites. And no, we're not trying to "sell" anything, just conduct some basic research.