The song had the first music video to hit 100 million views on Youtube, and the VERY first video to dethrone Evolution of Dance from Youtube's #1 spot. Girlfriend was THE most watched video on Youtube for most of 2008.
The song was the best selling digital song of all time by the end of 2007, selling 7.3 million digital copies WW.
The song went #1 in most countries WW, and was Avril's first #1 single on the Billboard Hot 100, and her 5th song to hit #1 on Pop radio.
Why did this song do so well digitally and online when online success wasn't as major back then? Did Girlfriend push forward the online and digital trading of music?
It boosted Dr. Luke's career, and basically everyone and Katy used him after Girlfriend's smash success.
Why did Girlfriend have such a huge impact on music especially the digital market?
