its just a pointless bullshit word. An estimation is a guess, and educated one. What the hell is a guesstimation?
People have been using "irregardless" in Boston for years, and that doesn't give it credence as a useful word.
Well this is common. "eBook" "MP3 Player" "Movie" (they haven't been "moving" since VHS!)
Just because iTunes doesn't adequately describe all that it can be used for does not make it a fail - of Homeric or any other proportion.
Should an iPhone be rebranded "iPortabletelecommunicationsandgamingGPSmapandmore "?