Reading your sources gives you more info :-). My mailinglist mixfreak.org was offline also .. Using it almost 4 or even 5 years now.

::Scripting::
YahooGroups has been down for most of the last 24 hours, bringing much of our work to a halt, of course, at the worst possible time. News.Com ran an article, but it doesn’t offer much detail on the source of the outage or an ETA. They’re merging YahooGroups with their chat communities

Paul Fletcher: “FYI, the Yahoo Groups outage was caused by the RAID on the main Oracle database blowing up. The hot standby has been offline because of a bad CPU, so the database had to be rebuilt. Which takes time with 40+ million users.”
—
It’s starting slowly again