I guess the "big deal" is b/c ABC apparently tagged the really graphic IM as occurring before the page was 18, when it occurred after he was 18.
IOW, "all" that this goes to is whether ABC told the truth/got it right about when a particular IM it published occurred.
i, for one, didn't know that the guy replying to Foley's questions was 18 at the time, the implication has been that these "emails", (keeping in mind that there are people out there who are not interested in making a distinction between emails and IMs), were to young pages