I find it interesting that the search terms derive form fairly different types of searches, meaning the information people are looking for in their searches differs for each band, for example, the top search terms for A7X are: avenged, sevenfold, avenged sevenfold, a7x, avenged sevenfold lyrics, nightmare avenged, avenged sevenfold dear god, avenged sevenfold download .
Where as the top DT searches are: dream theater download, album dream theatre, youtube dream theatre, dream theater live, mp3 dream theatre, dream theater torrent, dream theater tab, dream theater tour, dream theater drummer.
Seems like A7X terms are inquiring about songs and lyrics where as the DT searches imply that a lot more musicians, pirates and Europeans are looking them up.
Also, there's no specific songs in the top searches, but rather a more general search for albums. Interestingly, the rising searches for DT are 'facebook, octavarium and wiki' where as the rising searches for A7X are 'nightmare, dear god, lagu', then more various 'nightmare' searches. They're totally stuck in a nightmare loop. But then after Hail To The King I'm not surprised people are pretending it didn't happen.. Okay now I'm getting too pompous but come on, HttK was a bit of let down.
The 2010 Spike was not long after the Rev died, and right during the release period of the much anticipated Nightmare album. Looks like they're on a decline at this point as far as google trends go, even if the baseline has been pushed a bit higher, this is most likely from the search trends skyrocketing after an event such as a band member dying. Which is probably a much bigger deal than a band member leaving.
I think google is as big as it's ever been and yet seeming not used as much these days because of changing technology, increased use of social networks etc. I wonder if there's a trend to represent that?
EDIT:
https://www.google.com/trends/explore#q=googleYeah, who knows what that means, despite the constant increase in searches, it's been on the decline since October last year. I draw from this that google must be on it's last legs and if they don't up their game they're going under.