Here's an interesting site that summarizes where the prostitution laws are at around the world. Not sure if we agree with all of this fellow's offside comments - it'd be nicer if he'd just stick to the facts - but it's still a handy resource to have the laws and practices of various countries laid out in one place.
As for his opinions around street prostitution, that's clearly an issue that. in a decriminalized context, would be dealt with as a municipal zoning issue. And let's be honest - the reason we've got people selling sex on the street is because there are customers who buy that way. If it's an end to street work that we want, then we should be taking aim at the buyers on that front. It's not like there's a shortage of indoor venues.