it’s important to remember that this plugin will not stop comments that just look like spam.
So if you have humans leaving messages that are spammy then it wont stop that.
it is to stop the automated bots that flood your blog with 50-100 comments a day so if you’re still getting spammy comments after installing it then you might be being targeted by human spammers who are interested in the keywords that your blog is good for
you can try switching on the refer check in the settings and see if that works for you but if you’re getting real humans leaving comments then it might not help with that.
the only thing that seems to work for me is my commentluv premium plugin with the new anti backlinker module which removes links from comments until the user has been whitelisted
no links = no incentive to spam
when they see that they get no links then they move on to spamming another site that does give links
sorry I can’t be more help but spam from humans is very difficult to prevent.
@usera – spam coming in with commentluv just means the spammers have a feed on their site so commentluv can find a link