(updated on Sep. 23, 2011)
This channel is a sort of unofficial fan site of an amateur dancer "Okamaid", copying her dance videos from the "nico nico douga" site WITHOUT the owners' permission.
The purpose is just to introduce Okamaid outside the "nico nico douga" where she posted her official videos exclusively ( http://www.nicovideo.jp/myl...). She might not want to have her videos posted outside the "nico nico douga". If I receive complaints from Okamaid (or the owner of the videos), I will keep them private.
I strongly recommend you to join the "nico nico douga" (registration is free) and visit her original videos. There are three non-Japanese "nico nico douga" sites as follows (upper URL is the "nico nico douga" top, and lower URL is Okamaid's video list). Join the "nico nico douga", join her supporters, and leave cool comments!

Taiwanese:
http://tw.nicovideo.jp/
http://tw.nicovideo.jp/myli...
Spanish:
http://es.nicovideo.jp/
http://es.nicovideo.jp/myli...
German:
http://de.nicovideo.jp/
http://de.nicovideo.jp/myli...

Okamaid is an outstanding amateur dancer who became popular for her dance of "Princess Bride!" choreographed in the MAD video using the song of the same title by Kotoko and the idol characters of "THE IDOLM@ASTER" (an arcade and console music rhythm game). Her dance motion of "Love & Joy" was traced and used for various videos created through the MikuMikuDance, a tool of making 3D animation, which made the dancer more famous.

Okamaid posted her first video on January 22, 2008, and had not posted a video for a long period since April 30, 2008 when she presented her dance "Love & Joy". She categorized her first six videos as "Act 1" and the next six as "Act 2". She gave three dance performances at the "Nicodafe" event on May 17, 2009 at Shinjuku, which is called "Nicodafe Special Act" by herself, so you can assume the videos from the Nicodafe posted by the event organizer as quasi-official ones.
After a long interval, Okamaid uploaded three videos on the "nico nico douga" site on September 7 and 8, 2011. She called these videos "Act 2.5". In uploading the new videos, she announced that she got married in 2010.
Other than these official videos, you can find some of her dancing with amateur dance groups called "Zombies" and "Hokkaido Dancers" on the "nico nico douga" etc.

The name "Okamaid" is coined by the dancer herself to suggest "okame", a Japanese traditional mask of smiling lady, and "maid", a kind of a symbol of Akihabara otaku culture. In the first eight dances, two dances at "Nicodafe", and three dances of "Act 2.5", she wears unique dresses called "Wagosu", meaning Japanese Gothic Lolita fashion, created by a Japanese designer "Aya" ( http://ayadream.jp ).