[OSM-newbies] Reverse geocoding on Nominatim - acceptable volumes ?

[Iain Simpson]

I am maintaining a database of photos that I have taken when surveying 
for OSM. These have been geo-coded with the lon/lat values.

I would like to be able to generate a description (the address?) from 
OSM automatically.

I've just been looking at the Nominatim reverse-geocoding facility 
(http://wiki.openstreetmap.org/wiki/Nominatim) which I think would do 
what I want.

but

> Currently the details page creates a high load on the server and is only
 >intended as a debugging aide, as a result no xml api is currently 
provided.
 >Scraping or heavy use is likely to result in an IP ban.

Currently the details page creates a high load on the server and is only 
intended as a debugging aide, as a result no xml api is currently 
provided. Scraping or heavy use is likely to result in an IP ban.

I am currently taking about 500 photos per week.
What is an acceptable use and are there any alternatives ?