I want to see in Google Analytics whether or not people are viewing my website on a TV, such as with a smart TV or other device connected to their TV.

These are the only ways to do this that I have found so far:

Operating system: Google TV, Nintendo Wii, Playstation 3, Xbox

Browser: Nintendo Browser, Playstation 3

Are there other data points that I can reliably use to segment these users?

Thanks for the regex insight, Mark.

I haven't been able to find a common denominator yet, but I'll keep looking.

Since June 13, 2013, the number of organic search queries containing a plus sign (+) has gone up over 1,000% compared to the previous period on my site in Google Analytics.

These plus signs appear to be taking the place of spaces in these search queries (i.e. "word1+word2+word3").

This appears to be almost (or completely) Google organic traffic, not other search engines.

Since I highly doubt searcher behavior would change so suddenly, I'm trying to figure out why Google is replacing spaces with plus signs.

Is anyone else seeing this? Any ideas?