End of latvian-girls tourism?.. You are kidding. I think this is a special area of Latvia which should never end. Maybe we need only to work it out more civilized way.
This is part of the action described
here.
Regarding posters: I've seen them as well and I heard Latvian government institutions are worried on it, because it creates the negative image of Latvia outside. Some money were invested as well to advertise what's bad what's good, but I think it won't matter a lot.