PS4 is also trending well on Google Trends.
On the 21st, PS4 ranked at 100 compared to PS3 25, Xbox 360 11 and Wii U at 3.
It also ranked at 73 compared to 98 for twitter, meaning it was only 25% away from the same number of searches as twitter.
Just for the lols PS4 ranked at 100 and VGChartz at 0.
Edit: Disclaimer I have no idea how Google trends works lol