I had to do a whole bunch of research, and the best websites were mostly Weebly based (I find the blogspot ones a bit cramped and unattractive). In the end I found a lot of old sites. It was weird when I found Brella's new Tumblr home for her UTAUs, I'm not very familiar with Tumblr at all so I was very suprised that it is possible to use it in that manner.
Didn't know about Hika's, good find!
Aesthetically and organizationally however, the JP (and a Chinese one here or there) sites have many more shinning examples. A lot of the Overseas ones just feel either incredibly cramped, busy, and lacking in organization (Yesi's stuff feels all crammed onto one page, Mysts's is more attractive but has LOADS of subtopics everywhere) or very bare and lacking (then again most people are just releasing voicebanks, not banks, USTs, tutorials, tips, possibly programs/plugins, critiques, and more that we're planning). This is just the overall feel I got however. Some Japanese sites were absolutely dreadful.
I even did some looking into VOCALOID sites (as I needed more competitors on a professional level), and it was interesting what I found. Internet.co's site is TERRIBLE, and only with Kokone's page are they starting in the right direction. Crypton's is very pleasing to look at, as are Voctro Labs' and Zero-G's voice-specific sites. MAYU's also struck me as terrible, having no supplementary info, a very poorly placed menu, and overall it focuses too hard on looking nice. The rest are average (though Power-FX is criminally simple and short and plain).