There is no any other VOCALOIDs. All vocals found in VOCALOID wikia are the original VOCALOIDs made buy actual music/recording companies. Haku Yowane, Akita Neru, and Hatsune Mikuo etc. are fanmade based of the VOCALOIDs voicebanks.
I don't really know if there actually is any influenced Anime based off Vocaloid...Black Rock Shooter looks identical to Miku, but Black Rock Shooter was actually made before Miku...so there's actually no relation between Black Rock Shooter and Vocaloid.
No there isn't any vocaloid online avatar games. But there is dress up games. I also wish for vocaloid online avatar games.
Not yet.
You install a Vocaloid like any other piece of software. Price varies depending on the Vocaloid but can be as much as $200. You have to pay for Vocaloid, unless you illegally download it. However there is a program called UTAU that is similar to vocaloid and lets you create your own UTAUloid rather then just the one voice
Vocaloid is not any type of instrument as it is a music production software. After you have recorded the vocal track of a song Vocaloid allows you to go back and alter pitch, tone, and volume.
On the internet. Use 'Youtube to Mp3' converter and convert any song on youtube you like (i.e. any vocaloid song on youtube) so there you go :)
I haven't been to Japan Disneyland in over 10 years, but, it seems unlikely there would be anything Vocaloid there, officially. It would seem strange for Disney to promote characters outside of its ownership. Besides, Vocaloid characters are still copyrighted by the companies that created them. For Disney to sell any goods or promote a Vocaloid character, a contract or agreement would have to be made allowing Disney to do so. It's not impossible that a deal could be made for a cross promotion of some sort, but so far, i have not seen or read anything.
no vocaloid is a music program and they are just characters with a voice some people like to pair characters together but there are no offical parings it is up to you you can pair any character with any character that you want.
Galaco does not have an official last name.
Miku Miku Dance software and Vocaloid products are not dependent on each other in any way. You do not need one to use the other.
Well I don't know about Black Rock Shooter but Vocaloid doesn't have any anime based on it. Although there are rumors floating around that they are making one.