The two phrases are among the Top Words of 2010, according to the Global Language Monitor, which analyzes trends in word usage with an emphasis on global English."
[. . . .]
"Other top words include 'refudiate,' a conflation of 'refute' and 'repudiate' used by former Alaska Governor Sarah Palin; 'guido' and 'guidette,' terms heard on the TV show Jersey Shore; and 'snowmagedon,' a hybrid of 'snow' and 'Armageddon' that was used to describe record snowfalls in the United States' east coast and northern Europe last winter, according to the Monitor."