asu_(pixiv) -> asu_(asoras)

ketusi -> ketsushi

Same artist.

yuu_(pixiv111910) -> asaiyuji2

Same artist as seen by his Nico Nico Seiga images.

Edit:
asakura_nagi -> minatsuki_nao

Goes by 水無月ナオ handle now.

soutsuki_hisame -> futatsuki_hisame

Reason: ふたつきひさめ from his webpage.

Moved due to ambiguous + low count:
shinon_(artist) -> shinon_(tokage_shuryou)
chink -> k_(li)
asu_(pixiv) -> asu_(asoras)
ketusi -> ketsushi

Aliased:
300cm -> urokozuki
hinata_(tume_0000) and miyabi_1123 -> suribachi_(miyabi)
anderson-kun -> donarudo
yuu_(pixiv111910) -> yuu_(asaiyuji)
asakura_nagi -> minatsuki_nao
soutsuki_hisame -> futatsuki_hisame

yoo_(artist) -> yoo_(pixiv630924)

psich said:
yoo_(artist) -> yoo_(pixiv630924)

No, don't use pixiv number at all

psich said:
yoo_(artist) -> yoo_(pixiv630924)

Moved to yoo_(tabi_no_shiori).

tino0618 -> akira_(natsumemo)
Artist's name: 暁(ｱｷﾗ)
Site name: なつめも
http://natme.web.fc2.com/
http://www.pixiv.net/member.php?id=68900

yukinkocat -> yuyuzuki or yuyuzuki_(yume_usagi)
Artist's name: ゆゆづき
Site name: ユメウサギ

e-suke -> sawashiro_kei
Used as artist's current Pixiv handle, and also given in official website profile.

afulu -> mugishima

yoko_(artist) -> yokota_takuma

Artist's name: 横田卓馬.

Not sure if MAL and MangaUpdates are OK as the sources, but these links are all I could find:

http://myanimelist.net/people/3906/Takuma_Yokota

http://www.mangaupdates.com/authors.html?id=10328

Aliased:
tino0618 -> akira_(natsumemo)
yukinkocat -> yuyuzuki or yuyuzuki_(yume_usagi)e-suke -> sawashiro_kei
afulu -> mugishima

Moved:
yoko_(artist) -> yokota_takuma
- Only 8 images, and there are many artists names yoko, so I didn't do an alias.

lan hallelujah -> blue hallelujah

Reason: her handle 藍·Hallelujah is typed as Blue·Hallelujah as seen in post #582497, all of her websites and email used "bluehallelujah" in their address too.

藍 is pronounced as "Ran" so it's wrong romanization anyway.

dreamrabbit -> yuyuzuki_(yume_usagi)
Same artist, just with the information of an older Pixiv account.

Saluki said:
藍 is pronounced as "Ran" so it's wrong romanization anyway.

I think the artist is Chinese, so "Lan", a Pinyin reading, would actually be more correct in that case.

kenntairui -> kentairui
Kenntairui is used by the artist himself. Kentairui is its proper danbooru romanization.

De-aliasing: kansousamehada -> kei_t_sr and whiteshark -> kei_t_sr
Aliasing: kei_t_sr -> kansou samehada or kansousamehada
Reason: This artist said that his name is 乾燥鮫肌.

Moved:
misou_hirame -> karei_(hirameme)