[magduf]

For the ones in local neighborhoods, as long as they're not overcrowding the place, or committing crimes or something, you have to remember that all those tourists are pumping money into the local economy. They're eating food at the local eateries, they're paying for transport (probably helping fund the local public transit), they're giving money to local homeowners who then spend at least some of it locally and hopefully pay some extra taxes, etc. I fail to see how this is a problem, unless it's just too many of them of course.