Someone did indeed inquire of Yuku and this was the answer:

Hi,

Relative time is used nearly everywhere on the internet nowadays. (e.g. my gmail has been using it for years, and so have a lot of systems). It's just a matter of getting used to it, but it has generally proven to be better.

Yuku Team

December 03, 2012 10:58 am
This is the most laughable company of High School Harrys I've seen. Makes one pine for EZBoard.