> You say words, you express meanings.
> You say "thank you", you express gratitude.
> You say "I love you", you express your feelings.
>
> You cusku words, you cusku "thank you", you cusku "I love you".
> You don't cusku meanings, gratitude or your feelings.
>
> "x1 says x2 to x3 via medium x4" is a much more accurate translation
> of "cusku" than the version with "expresses", despite the gi'uste's
> unfortunate choice of keyword. And "via medium x4" makes it plain that
> this is not restricted to bacru, in case you were tempted to use such
> an artificially restricted meaning of "say".
>
> Of course words do have meanings, so when you say words you are also
> expressing their meanings, but what goes in x2 are the words, not the
> meanings.
This explanation makes much more sense. Unless you wish to tell us
that "I say 'hello' to you using irc" is not a proper use of the word
"say" in English. Clearly it is.