Some of my blogs get a lot of spam comments, if I do not check the blog for a week, there will be hundreds of spam comments. However, as a blogger I do not worry too much about receiving spam or poor-quality comments. I believe genuine comments are valuable, but getting a lot of spam comments are not my primary concern. What matters more is whether my site is receiving traffic, how the visitors stay on my site, and what actions they take while they are there.
