ATOM

Here are the Atom urls:

http://jaiku.com/feed/atom
http://devku.jaiku.com/feed/atom

And with authentication:

http://devku.jaiku.com/feed/atom?user=[Your nick]&personal_key=[Your key]
http://devku.jaiku.com/contacts/feed/atom?user=[Your nick]&personal_key=[Your key]

RSS 2.0

Here are the RSS ones:

http://jaiku.com/feed/rss
http://devku.jaiku.com/feed/rss

And with authentication:

http://devku.jaiku.com/feed/rss?user=[Your nick]&personal_key=[Your key]
http://devku.jaiku.com/contacts/feed/rss?user=[Your nick]&personal_key=[Your key]

RSS feed has some custom elements:

<jaiku:comment count="0" />
<jaiku:user nick="devku" first_name="Devon" last_name="Kubrick"
    avatar="http://jaiku.com/image/avatar_default_t.jpg"
    url="http://devku.jaiku.com" />
<jaiku:timesince>1 month ago.</jaiku:timesince>