I always get a fair amount of SPAM comments on my blog every day. However, in the last week that amount of SPAM has gone out of site. I am having several hundred a day. I am mentioning this because sometimes a valid comment gets classified as SPAM and I correct it and it is then accepted by the blog.
With the amount of SPAM comments I am getting now, I am not having time to look at each comment to see if a non-SPAM comment got captured and classified as SPAM.
If you submit a comment and it never displays, then that may be the answer. WordPress does an excellent job of preventing SPAM comments from displaying.
A new comment from a first time commenter goes into a different category, so if you are a first time commenter, your comment will appear after I have a chance to approve it.
I really wonder why the SPAM level has increased.