You could start with www.bitcoinpulse.com and decide for yourself

Betteridge's law of headlines says, "No."

It sure is best time for Bitcoin Price is stabilizing and volume is growing really rapidly !!! OMG

BITCOIN HAS A PULSE and it's... GROWING: http://www.google.com/trends/explore#q=bitcoin 

With Microsoft enabling Bitcoin payments for Xbox stuff, that will make Bitcoin go viral a lot quicker and more new people will want to check it out and see what it's about. I think it's a good thing that such big companies like that is getting behind Bitcoin

Bitcoin has viral periods at peaks of bubbles, the overall trend is more vitality.

If only the viral word translate into adoption. The fact is that although bitcoin search volume can be high but most people stop at the stage of just checking what it is all about and not further than that. And sometimes the search relates to keyword that portrays bitcoin in a negative way like getting hack, price volatility, manipulation,

It is not going viral but each day more people know about Bitcoin in number and in percentage of the world population than the day before.

Don't know a lot about this viral thing for BTCBTCBTC, but all I wanna say is, I'm trying to evaluate what this thing actually is, and making people too learn about it in my circle. I'm trying to form a community for my city in order to let them understand this on how to use it, what are the features, etc. and also, will be opening a "Bitcoin Only Shop" soon in my place for this to go a bit viral in India...