Possibly related to: http://meta.stackexchange.com/questions/75154/ignored-tags-doesnt-handle-synonyms.
c++0x favorited for a long time. Now that it's been made a synonym of
c++11 (I think this was done backwards, C++11 is no more "Official" than C++0x and C++0x has much more widespread use), it no longer brings me questions related to ISO/IEC 14882:2011, AKA C++0x, AKA C++11.
Synonym translation needs to be applied to favorited tags.