Yet, instead of but ??

[Marsha Alley]

Oops - forgot that little detail.  Please ignore other grammar and punctuation - this was informal emailing:

"I know I've mentioned it before, yet there are amino acids that are great for cravings and they work."

  ---------------------- Information from the mail header -----------------------
  Sender:       American Dialect Society <ADS-L at LISTSERV.UGA.EDU<mailto:ADS-L at LISTSERV.UGA.EDU>>
  Poster:       "Bethany K. Dumas" <dumasb at UTKUX.UTCC.UTK.EDU<mailto:dumasb at UTKUX.UTCC.UTK.EDU>>
  Subject:      Re: Yet, instead of but  ??
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  Example?

  Thanks,
  Bethany

  On Wed, 19 Jan 2005, Marsha Alley wrote:

  >I have a friend who has begun to use "yet" to the exclusion of "but."  I
  remember early on in her usage I saw the same thing in print; alas, I
  cannot remember where.