We may need Captcha... need, Captcha, may

So many advertiser,should we use some methods such as captcha to prevent adv robots?

yes, thank, any idea to protect it from advertisement? i am headache with these people,
thank Bryana

These "optional method" below are better to be announced in this system.Both reasons and punishments.
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optional(?) method 0 :Of course anonymous post is forbidden.

optional method 1:as the title,a captcha is essential before posting & replying threads,this could be a helpful and an easy mechanism to prevent advertise robots.

optional method 2:a correct captcha must be input before a person enroll into this forum.

optional method 3:a newbie just enrolls into this forum should not be allowed to post as well as reply in a limited time.(30 min - 24 hours,it depends by ur configuration)

optional method 4:a newbie is allowed to post only after he(she or it) has already replied once in this forum.This method could prevent posting machines who enroll dozens of members automatically.

optional method 5:plz answer the quiz "what's the domain name of this forum?" "1+1=? etc." if u really want to post or reply.

optional method 6:establish an advertisement block for those real advertisements but not spams.

optional method 7:make sure every newbie of this forum is not a robot.This really requires lots of energies.

optional method 8:config an interval between posting(and also replying)

Good luck,Khmer forum!

very thank , i will take it into consider, and change it.