Musical maps, enlightened tourism, and GIS (Geographic Information Systems): Thoughts?

Now that you can literally walk around any city and call up information on your phone about everything around you, is anyone taking advantage of this to create the kinds of maps or GIS that would appeal to users of this board?

For instance, I'm imagining these will exist soon if they don't already:
__Google map of historic hip-hop locations in the Bronx.
__Purchasable walking tours with oral history about where artists lived, popping up as you walk by each location.
__Club guides that stream music of bands performing right now within walking distance.

I imagine people tailoring personalized GIS pages to their interests in coming years, paying for layers through local publications that would have once stuck to listing events on a website. But as usual, that's probably too limited: Location-pinpointed mobility seems like the next big paradigm shift after musical/information mobility in general.

Taking off from these threads somewhat...
Geographic Information Systems (GIS)
This is a thread about MAPS, GIS, GPS and the USGS!
Stalking your Heroes on Google Maps
S/D: Metro maps of the world

Also just interested in cool music maps or GIS of any kind.

I wrote the text for this one, which got some awards:
http://blogs.citypages.com/blotter/CP_RockAtlas.jpg

And here's a "semantic map of the Last.fm music folksonomy," featured in the GIS course I'm taking:

http://cns.iu.edu/images/pub/2012-biberstine-lastfm-giscience.pdf

Now wishing I could take "enlightened tourism" out of question--so loaded!