Imagine you are planning a trip to Los Angeles and want to see what the clubs are like that Paris Hilton goes to. Now you can. Or if you are heading to Paris, check out which bistro has the best steak before you get there! In all seriousness, I could see this as a huge plus for travelers. But see below for the negative, videos must be geotagged and not everyone will do this.
Check out some additional release information on Mike Abundo's Blog. For the mashup to work effectively, videos must be geotagged when uploaded and then you need to install the mashup. Took four seconds to install.