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if your make your site a HTTPS site.. make it disable the proxie headers.. and make it look for the header
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Q3123461)
only allow 1 submission per user-agent header..
the header User-Agent: is unique to EVERY one's browser.. if you do all 3 of those things i guarantee you will have NO auto submissions.. it's impossible.. the only way to be able to do it will be to program each https site with pure winsock.. which is no easy thing.. you would have to know how to program very very good.. or pay a coder 200 - 500$ to code a program to do it.. for EACH url.. they are different everytime.. that would 100% disable people from submitting more then 1 url per day.. they can alwayse still auto submit.. but doing this will make sure they can only do 1 url per day
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