I'm getting hundreds of spam submissions a week

[visio]

I'm running a free version 2.1 on a site of mine:
webhostingfairs.com

I dont really want submissions so I made the payment obligatory and also reciprocal link plus I also use the image confirmation, in simple english I made as difficult as possible for someone to submit his link to my directory, but recently I started receiving like 30 submissions a day, all rubbish, no payment, pharmacy kind of sites etc, a real waste of my time, my question is how can I stop this, what other security measures must I take so that I dont get submissions? Rename the submit.php file? I think they (the spammers) use back door method, any suggestions are welcome.
Thanks

[James]

There is no "backdoor" method.
Use the ban word mod I made available for the 2.x release or upgrade to the paid. That is the options.

[visio]

Thank you James for your suggestion but how then they bypass the payment and rciprocal back link and submit?

[James]

Simply choose the payment option ......

then when it goes to paypal close the browser or click next in the sem-auto submitter ... pretty easy to do

recip add your submitpage works pretty good

[TDK]

visio, what I did with my Contact Us section of my website, since I was having a hard time adding a Captcha, was use a password script where I put "If you are not a spam bot, please enter "blahblah" as the password to enter the contact form". I used the one found here: zubrag.com/scripts/password-protect.php (sorry, can't post Live urls yet)

[James]

it isnt spam bots on the submit is is semi-automated submitters who knows that a lot of admins are lazy and assumes if it is there then they paid or doesnt even bother to check just approves.

[visio]

Thank you guys, I decided to rename the submit.php.

Paul

[anandnadaar]

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Right! Even I did the same thing..

Spammers were sending hundreds of links in couple of days.. so I researched a lot on how to stop them.. I tried using very hard to read Captcha.. then I tried making it compulsory to be a member to submit a link.. but to my surprise everything was cracked by the spammers..
Then I suddenly realised the idea of renaming submit.php

Now I am happy link directory owner :) no spam links so far :)

[visio]

actually even with the submit.php useless, because I have renamed it, I'm still getting submissions, not many but 2 or 3 a month, I really dont know how they do it.

Paul