[HOT] OSM presentation late April

[Richard Welty]

i've been invited to speak about OSM at a conference on GIS applications 
in Public Health.
i'm planning to use my presentation on HOT as the first 20 minutes of my 
hour.

for those who haven't looked at (or have lost the URL), the presentation 
is here:

http://www.averillpark.net/OSM/HOT/

given that i have an hour, i can add some stuff on HOT. anything of 
particular importance?

i'll probably fill out the rest of the hour with a little bit on how 
walking papers works, and
discussion of other interesting projects leveraging OSM for applications 
in the public sector.

richard