No subject

metadata and feeds coming out of openstreetmap is a really nifty thing, 
and a great point of it.

So, I'd like to put together a guide showing people how to make use of 
all these feeds. I was thinking of including:
* basic feed stuff from an openguide
* some interesting feed based searches
* how to find out more about the feeds, searches etc
* examples of using the feeds in other web applications (php, django,
    rails etc)

I was wondering if people could suggest really interesting feeds they use? 
Also, if people current integrate thee feeds into off-the-shelf systems 
(blogs?), might they be willing to write a guide to integrating og feeds 
into them?

Cheers
Nick