Board Thread:Questions and Answers/@comment-112.207.28.209-20140124094740/@comment-53539-20141019093950

With an undeveloped fandom where it matters (south Korea) and hate in Japan, SeeU will never overtake Miku. That much is sure. And with the provider in trouble, SeeU will likely never see any further developments.

SeeU's popularity is like a see-saw, in some parts its really popular and other parts not... And over time due to the underdevelopment of the Korean fandom and more appealing vocals elsewhere, SeeU has lost a lot of popularity.

https://www.google.co.uk/trends/explore#q=SeeU%20vocaloid

As you can see, its long past its height of popularity. :-/