When I was a kid, it was Ali vs. Frazier...

...or was it Ali vs. Cosell?  Or perhaps the Yankees vs., well, everyone? 

The current rivalry du jour seems to be the two hottest social networking sites, Facebook & Twitter.  Twitter must be hot...it's taking lots of broadside hits.  Yesterday, Google CEO Eric Schmidt called Twitter "a poor man's email".  Ouch.  Today, Facebook unveils a redesign of the home page that is designed to, well, out-Twitter Twitter. 

Jeesh.  Twitter is taking more strikes than Mario Mendoza.  And check out the Wikipedia reference on Mario's name to learn what the Mendoza Line is to help complete this sports metaphor-layden story. 

Down goes Frazier.  Down goes Frazier.