These pages will be seen and that is all there is to that argument. Rithmix has validity in that it discusses how algorithms work and how just about anyone can perform simple experiments to analyse simple parts of them. It is not about abusing what is learnt and indeed actively discourages abuse. To block such pages would not be 'defence of privacy' or anything else that is noble. It would be censoring that of which the censor disapproves.
Lets face it.
The only persons or businesses that the Rithmix pages can harm are those 'so called' positioning companies who use 'spammy' keyword repetition, irrelevant keywords and cheap tricks to little avail and take money from companies who simply know no better. If these pages can help end the practices of spammers then both the search engines and AIM-pro have a shared benefit. AIM-pro members are not against the search engines. As stated in the AIM-pro policies , we share a common goal in having internet users know that the search engines are a reliable and effective manner to find information and products quickly and easily.