Why do the Y/A! formats keep switching back and forth?

between the new and old formats?

?2014-01-06T06:40:44Z

Favorite Answer

May be a glitch during transition. Now new layout if live for all Yahoo Mail users. They have even restored 'tabs' feature (yay!)

http://www.youtube.com/watch?v=KAhRE8UiLAM

thejanith2014-01-05T21:25:01Z

When the US site switched awhile back, it kept flickering back to the old format for a couple weeks. Then, it settled down into the new format. I think it's just a switch-glitch.