I've noticed some of the spam comments in my spam comments folder are actually getting reasonably insightful. If, for some reason, you have a legitimate comment that appears to have vanished, let me know, in a comment without an associated link. The spam format I'm seeing most looks like this:
Insert flattering stuff here, occasionally even a good suggestion, like use more pictures
Visit my website .
So if this is your typical comment format, blogger tends to flag it as spam. I'm actually moderately forgiving if the commercial link is arguably somewhat germane to what is being discussed.