Taxes have been steadily increasing to more normal levels. (Considering this is the main reason they beat the last few times beats took place.)
Growth has obviously slowed. Questions still remain as to how long the high multiple will remain. If a reversion to mean is taking place, goog will see a trailing multiple of 24-26.
Technically, there is horizontal support in the low 500s. Although the longer-term 50sma (from weekly) trend was broken.
On the monthly, if 500 breaks, settling near the 38sma makes sense. And corroborates with the trailing multiple reverting to the mean.