Google data centers in late 2013 and began selling off the barges in 2014. Most of the software stack that Google uses on their servers was developed in-house. According to a well-known Google employee, C++, Java, Python and (more recently) Go are favored over other programming languages. For example, the back end of Gmail is written in Java and the back end of Google Search is written in C++. Google has acknowledged that Python has played an important role from the beginning, and that it continues to do so as the system grows and evolves. The software that runs the Google infrastructure includes:
Criticism of Google over 4,000 "thumbs up" votes, while an online petition demanding Google+'s removal gained more than 230,000 signatures in just over two months. Writing in the "Newsday" blog Silicon Island, Chase Melvin noted: "Google+ is nowhere near as popular a social media network as Facebook, but it's essentially being forced upon millions of YouTube users who don't want to lose their ability to comment on videos." In the same article Melvin adds: On July 27, 2015, Google announced that Google+ would no longer be required for using various services, including YouTube. Users are now able to delete their Google+ profile without