Nanny corporations: Craig's List and prostitution

Craig's List has taken measures to reduce the amount of spam in the parts of its on-line advertisements related to "casual encounters" and "erotic services" but at the same time apparently feels the need to lecture its users about prostitution and to try to reduce the number of voluntary transactions taking place via its websites. I suppose part of this is necessary to avoid the attention of rogue (is there some other kind?) state attorney generals looking for newspaper coverage in advance of running for governor or senator but it is a shame to see corporations taking the lead in implicitly supporting illiberal laws. Ebay did much the same thing a few years ago when it ramped up regulation of the adult part of its auction site.