If you want some more background on uptalk and some of its spread from linguists:
http://languagelog.ldc.upenn.edu/nll/?p=568
http://languagelog.ldc.upenn.edu/nll/?p=8879
FTFY
http://www.patheos.com/blogs/geneveith/2011/08/the-murray-ge...
I see this phenomenon a lot, also with topics like education.
If you want some more background on uptalk and some of its spread from linguists:
http://languagelog.ldc.upenn.edu/nll/?p=568
http://languagelog.ldc.upenn.edu/nll/?p=8879