Sad but true: according to Google Trend results, silly string is not popular with anyone, and is seriously losing out to String Theory.
See the tiny little bit of red graph, in the middle of 2005? Well, that's the silly string result. For some reason, people in Chicago and LA were momentarily excited about silly string, then promptly lost interest.
Meanwhile, people in India and the USA have lost their sense of humor entirely and insist on focusing almost exclusively on String Theory, without any silliness.