The adventure in online business for Microsoft is extremely costly : 8.5 billion US Dollars loss, with 2.5 billion loss only in 2011.
Because of this, is very probable the selling (always in loss) of Ciao  to LeGuide , for an amount non disclosed.
One of the major causes is losing positions in search engines, because of Panda, estimated 33% traffic loss.
Source : ZDNet France