I made another quick video to help you remove annoying spam comments from your blog. Unlike the G+ ones, you can't report the profile and get them blocked. Somebody pointed out that this could be open for abuse and get legitimate profiles blocked.
Anyhow, here's how to do it through your blogger dashboard and clear it off your blog relatively painlessly.
I recorded this one using my gaming headset. It appears I need a pop filter and perhaps need to have my sinuses checked, as I snort a lot. Sorry about that.
Hope it's useful to you.