Stopping spam in web page

So right now my only spam protection is going to be to check all incoming messages against this table, http://www.stopforumspam.com/downloads/, that I have imported into my database, and if the IP is found, their message will not be posted.

We don't really want to hinder usability by having one of those "Type what you see..." or a sort of e-mail confirm system similar to Craigs List.

Will this IP check be enough to get rid of (most) spam comments, or should I really look into adding something else. Maybe there is some free plugin开发者_StackOverflow中文版 that I haven't found that doesn't hinder usability and will help us out more?

Thanks!

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There you go :) http://akismet.com/

There's an API, you send them the comment body and they reply if it's spam or not. This is (maybe the best) spam hunting service, they have large word databases and good self-learning filters.

Additionally, it's free for personal use. I don't know how much it costs for business.

I'm in no way affiliated with them, I just found it by chance a couple of years ago.

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akismet.com offers a quality service that will protect your site. Depending on the nature of your site there may be a fee. If your site is a personal blog they have a "WHAT IS AKISMET WORTH TO YOU?" plan where you can choose to pay $0. They would prefer that you pay $3 to $5 per month.

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There's a reason captchas ("type what you see..." things) and email confirmation lists exist - there's always someone attempting to circumvent your site's security for personal gain. In all likelihood this will extend beyond spam, as well.

Just keep in mind that you're putting your trust in any external solution that you go with (which is why things like in-application email confirmations and captchas have gotten popular, considering they're not too difficult to implement and you have full control over them).