Are CAPTCHAs Getting More Difficult?

CAPTCHAs are a challenge-response test used to help decipher human responses from that of a computer in order to prevent automated software from performing actions which degrade the quality of service.  Recently I’ve noticed that CAPTCHAs are getting increasingly difficult.  Is this a sign of tech evolving faster than the human mind?

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I haven’t quite solidified my personal goals for 2013, but

Much has been written about big data (insert air quotes)

A couple of days ago the Wall Street Journal reported