Anti-spam code in blog comments

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No spam at my WordPress blog!

chon for a long time, the spammers have discovered the blog. It is the little program for all so wonderfully easy to abuse the comment feature and fill it with garbage left to porn themes, Viagra and Dödel software.
WordPress, however, has indeed made a lot of house built ...
But ... all this is not satisfactory. Of course I can blacklists with IPs that incorporate common spam words, etc. - but to the millions of rascals with their ideas because I limp behind forever. I block Hotmail and Yahoo addresses. I can state that my comments containing more than one link, to be first "submitted". I can set time delays that about every 5 minutes may post the same IP a new comment. Or I let every comment sent by e-mail first, before I "manually" approve. Whew, I've got enough as it is to sort out from the mailbox.

What an effort! And all these solutions can make "real" animal coming over ...

But finally, finally I've found it and the thing looks promising: the famous "letter code as graphics-from-user-per-hand-entered" for WordPress would shoot down the spam robots. Let's see. Included is the code - please let me know if there is not what should technically work.

10 comments

  1. Guenther
    October 7, 2004

    Good idea, congratulations. Finally this is a workable solution.

  2. Matthias
    October 7, 2004

    What a hassle. So, I find this very uncomfortable.

    Because I like the solution for Textpattern better. You must always go on the preview. This keeps the spammers from supposedly well.

    BTW: I have not had any problems with spammers.

  3. Herbert
    October 7, 2004

    Matthew: Thanks for the hint - look at me I look around, how exactly it works with Textpattern. Perhaps what can be crafted for WordPress (and now having to type the code probably is little more reasonable, right?).
    Otherwise: I had so far about 6 - and probably would have 12 daily spam Comments which became every week more ...

  4. Christin
    October 7, 2004

    I had already written to you this morning a comment.
    Twice I made a mistake has been reported. I am now trying again ... maybe I get lucky? Wish you a nice evening. Best regards, Christian

    PS: I also had no problem with comment spam

  5. Herbert
    October 7, 2004

    Christin: Thank you for your feedback. Possibly. are the errors as have been possible: each code a "single code". So if you, for example, the back button to move back does not "update" makes the old code is displayed, then no longer valid.
    Well, now I try the system out of time because it seemed to be the simplest solution. But if there are too many probs, I let myself think of something else.
    Anyway, it's great that you will be spared from spammers! As you do it? :-)

  6. Christin
    October 7, 2004

    Hmm ... I rather think it is up to the Courier font. Since you often can not be an O from a 0 (zero) but can also be that I need glasses * laughs * We'll see if I catch the correct letters now * lol *

  7. Stefan
    October 16, 2004

    Not a bad idea. But has a huge disadvantage. With my text browsers (ie links, Lynx & Co), it is no longer possible to write a comment because I do not see the graphics with the code. It thus blocks from some people. What about using "blind" readers of your blog?

  8. Herbert
    October 16, 2004

    Stefan: Yes, your argument is already justified. If I am right, there are two groups to which this is true:
    Group 1 can not display graphics on purpose, for example, to be able to surf faster. Which can then be alerted by the code set and can just switch to the graphic.
    What Visually Impaired / Blind / "barrier-free surfing" far, if someone reports from this group, I'll think of something. I would imagine that there is a far greater problem is that nowadays blog content can be positioned almost continuously by CSS.
    Well, maybe there's already the next time a new solution, because the extended beta 4 of WP 1.3 are the Comment-spam protection. Anyway thanks for your note!

  9. Carsten
    November 2, 2004

    Spam robots are done with these images. Either by image recognition, or with this trick:

    http://en.wikipedia.org/wiki/Captcha # Circumvention

  10. Herbert
    November 2, 2004

    The Wikipedia article is really interesting - thanks for the tip! The process described therein, however, would, if I understood correctly, this does not work because of the comment submission does not register (and thus no detour) is necessary.
    Nevertheless, it may eventually be some means to circumvent the well here - but I'll wait. The introduction of picture codes with me the whole flood of spam-comment-on immediately 0 (!) Decreased and that seems to remain so (at other blogs I use other methods and still has to clear time and again in between). When it does sometimes, I think about something new :-)