Before Miku was released, Vocaloid was not much more than an obscure program. Nico Nico Douga played a fundamental role in the recognition and popularity of the software. Soon after its release, users of Nico Nico Douga started posting videos with songs created by the software. According to Crypton, a popular video with a comically-altered Miku holding a leek, singing levan Polkka, presented multifarious possibilities of applying the software in multimedia content creation. As recognition and popularity grew, Nico Nico Douga became a place for collaborate content creation. Popular original songs written by a user would generate illustrations, animation in 2D and 3D, and remixes by other users. Other creators would show their unfinished work and ask for ideas.
On October 18, 2007, an Internet BBS website reported that she was suspected to be victim of censorship by Google and Yahoo!, since images of Miku did not show up on the image searches. Google and Yahoo denied any censorship on their part, blaming the missing images on a bug that does not only affect "Hatsune Miku" and related keywords but other search keywords as well. Both companies expressed a willingness to fix the problem as soon as possible. Images of Hatsune Miku were relisted on Yahoo on October 19.