It’s so much nicer to read “1 hour ago” then “2008-11-29 10:32”. This has been implemented as a special date format called age:

<r:show date='created_at' format='age/%Y-%m-%d'/>

The part after the slash / is the format used if the element is further away then a week.

This format displays the following messages:

1 minute ago  / in 1 minute
x minutes ago / in x minutes
1 hour ago    / in 1 hour
x hours ago   / in x hours
yesterday     / tomorrow
x days ago    / in x days
[normal date if age is greater then a week]

As soon as someone finds time to translate this it will be available in other languages as well…