@Lynn Dye - I've seen some of those, too. If you are unsure whether or not a specific comment is spam, check the name and (if any) URL included with the comment.

If the comment text has no links, and the name/email doesn't contain a URL, then it's probably not spam.

On the other hand, many WordPress blogs are configured to require moderation of all comments from commenters who have not had a comment previously approved. So, spammers may be taking the tack of posting one, innocuous comment in order to get around this first-comment moderation. So, for a borderline comment, just be sure to watch for any future, spam comments from the same email address (assuming such comments get past Akismet).