This is an improvement, but this ranking will be biased towards languages that generate lots of questions. A language that attracts more seasoned developers that also has decent documentation will rank lower than it should.
That said, I've wondered for a long time if the Tiobe index is subject to a potentially much bigger source of skew - namely, I suspect that C, C++ , and Java get a boost for being three of the most popular languages for people who spend more time talking about programming than actually programming.