I heard that Captcha system is going to be innvated to 2ch, not only to pink channel.
However I believe that plan is not proper, for the system is too troublesome.
With Captcha, people will have very trouble posting, and the number of 2ch users may decrease seriously.
So, how about placing some ads on 2ch itself? Then, I think, you administrators will have
an income enough to operate the 2ch servers from the ads.