Reason 1 - Sure there was a downgrade. Sure it was fluffy and meaningless. All it was was a trigger since, as mentioned by a number of people in the past few days, YHOO has been trading in the 11-13 range all year. It's smack dab back in it's comfort zone.
Reason 2 - Hype will always lose out to fundamentals. Hype decays over time. Even a series of rumors won't hold the price up alone for too long.
Reason 3 - Goingbravo has not been pumping much for the last couple of days. Turns out that BAC is more exciting than YHOO. You simply cannot replace that kind of talent.
Oh yeah, and to the guy who got my $13's on OE, thanks for the cash. Betcha I get 'em all back soon, at a 3% discount ;-)