I have a very customized Wordpress web site where I post articles and videos twice a month and encourage readers to leave comments. I am having a problem with spammers leaving messages, and although I make sure that I approve each message before it's posted, my inbox is getting overwelmed with alerts that a spam message has been posted in the comments on my site's articles. Recently, one article was getting a spam message posted more than 20 times a day as if it was automated. I have experience with creating forms with a captcha, but I'd really rather leave this up to a professional to worry about. I don't want the appearance of my comment area to change at all or the basic functionality, but I do need to change something to prevent all this spam. It would be helpful if someone could tell me if there's risk that my site has been blacklisted or anything due to the spammers?