TIOBE is broader in scope, in that it uses Google, Bing, Yahoo, Wikipedia, Amazon, YouTube and Baidu to calculate the ratings. However, it uses the word "programming" in the search phrase rather than "tutorial", which PYPL claims is "misleading".
According to TIOBE's December 2012 results, Objective-C is the language of the year, rising 4.3% in popularity during 2012. C had the greatest developer share (18.7%), followed by Java with 17.6% and Objective-C with 11.1%.
Meanwhile, C# dropped a place to fifth place with a rating of 5.5%, and PHP was placed sixth.
"TIOBE is a lagging indicator. Among other things, it counts the number of web pages with the language name. Objective-C programming has over 28 million pages, while C programming has only 11 million. This explains why Objective-C has a high TIOBE ranking," stated a post on the PYPL web page.
TIOBE will announce its own programming language of the year 2012 later this month.