[OGDev] Interesting things with feeds?

Hi All

From the recent survey thingy, it seems that everyone agrees that the

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