Please, please, stop with this TIOBE nonsense. This index is a joke - can't someone with a burning desire for a weekend project create an open-sourced index website and engage with other hackers to incrementally improve it?
The one thing I can't stand about TIOBE is not the index itself - it is what it is - but the breathless announcements about so and so overtaking this or that, like it's a horse race.
Why is the question of "What programming language is most popular" one that needs an answer?