Just going to throw this one out there. I live in Lisbon, it's tourist-central (I'm from SF and I've never seen so many tourists). Since I see a ton of lost people every single day there should be a way to digitally leave comments on things and places and a free one-stop shop to find such info (like Wikitravel). This info, although having a central repository, should be pushed out to an app that connects to one's pho…
I really love this idea. Reddit-ish, but sort by proximity to location as well as quality score. That way, if you are in a densely commented area, you will see comments about your surrounding few meters/yards, but if you are in a less trafficked area you might see comments on your feed about something a few miles/km away, giving you a destination. Rather than 'fencing' regions then, if it could be done to just sort p…
The other issue is what occupies people's hands. It's surprising for me to see how many tourists use traditional maps (though, on the flip side, one never knows when someone is looking at a map on their smartphone), and how many people don't ask passers-by questions in order to get help. A dedicated app would mean less happenstance intereaction while abroad but it would also help not waste time (and give more time for more sights to see).
Another HN commenter mentioned offline capability, in this sense it could be like Wikipedia's make an e-book function, where you'd get, in the case of my idea, the pertinent street view photos, together with the right info downloaded to your phone. For ex, "give me top 10 comments on the Mona Lisa, 5 levels deep and for the Moulin Rouge, which I'm more interested in, give me the top 20 comments, 10 levels deep."
If a 'chapter' is to be added while on your trip, because you heard about something new and cool, then all that's needed is a wifi connection to download the right info and add it to the multimedia 'book'.