This thread has been really interesting reading. I'm generally crap at articulating opinions especially on big topics such as this, so I'm basically thinking out loud here, apologies if it's badly worded. To be honest this isn't a topic I've considered in this much depth before.
I have one question for minehaha, if it's not too personal, what are your reasons for going into prostitution/being a prostitute?
I think that whilst for some prostitutes it is something that they have chosen to do, and many punters are not violent or abusive, it's not acceptable that any prostitutes, no matter what the number, are in it against their will, or that any number of punters are violent or abusive.
I don't agree with prostitution or think it's right that men should be able to buy women's bodies as a 'commodity'. I find it repulsive that any man would think it was ok to buy sex, especially if they are married or have a partner.
However, I don't think making it illegal would necessarily be the answer. I think that would just push it underground and put the women involved in more danger. The 'normal' punters may stop buying sex but the ones such as those quoted in the link in the OP wouldn't. Similarly some sex workers may choose not to be involved any more if it was illegal but that would just mean that those that remained in prostitution would be the unwilling and most vulnerable.
I don't know what the answer would be though.