According to my judgment of quality
According to fandoms involved
According to pairings represented
Note that the last option does not include all the sites on the list, as many of them don't include pairing-specific art, and others I don't have enough of for any given pairing to include a full list. (A pairing doesn't get its own listing here until I have at least four sites for it to include.)
Before you go to any of these sites, you may want to check out the OFP. It's a site frequently linked to by Japanese artists. Respect it. If you want to ask for permission to use art from a site in icons, here is a polite request in Japanese, written by
あなたのアートを好き。 アイコンにアートを使っていいですか。 さいけんを施します。 ありがとうございます!
If you get a reply back in Japanese, running it through Babelfish should be enough to determine whether they said yes or no.
There is an exception to this rule, and that is sites with what is called "material," or "sozai." These sites have tiny icons (often made of pixel art), font packs, wallpaper textures, and the like. They are meant for use in other people's sites--although if you use them, you should still link back to the originating site. I will indicate which sites also include material.
Fandoms I keep track of in this post are Naruto, Final Fantasy (indicated as FF or FF# where appropriate), Star Ocean: Till the End of Time (SO3), Fullmetal Alchemist (FMA), Bleach, and D.Gray-man (DGM).
Warnings I use are Y (for yaoi), H (for explicit content), C (for toxic levels of cuteness), and WTF (for sheer bizarrity).
FAVORITE ARTS
pairings: Seifer/Squall
pairings: Vincent/Lucrecia
pairings: Renji/Rukia, Hitsugaya/Hinamori
pairings: Hughes/Mustang, Havoc/Mustang, Ed/Roy, Roy/Riza
pairings: Naruto/Hinata
pairings: Temari/Shikamaru
pairings: Naruto/Sasuke, Kakashi/Sasuke, Sasuke/Sakura
pairings: Sasuke/Sakura
pairings: Asuma/Kurenai, Temari/Shikamaru, various
pairings: Naruto/Sasuke
pairings: Roy/Riza
pairings: Renji/Ishida
pairings: Roy/Riza
EXCELLENT ARTS
pairings: Ed/Al
pairings: Ichigo/Rukia, Renji/Rukia, various het
pairings: Roy/Riza
pairings: Sasuke/Sakura
pairings: Kakashi/Sasuke
pairings: Neji/Hinata
pairings: Itachi/Sasuke
pairings: Ichigo/Orihime, Shunsui/Ukitake
pairings: Shikamaru/Temari
pairings: Shunsui/Nanao, Shikamaru/Temari, Neji/Hinata, Naruto/Hinata
pairings: Shikamaru/Ino, Neji/Tenten, Naruto/Hinata
pairings: Gin/Izuru, Renji/Izuru
pairings: Sasuke/Sakura, Kakashi/Sakura
pairings: Roy/Riza, Sasuke/Sakura
pairings: Gin/Izuru, Shunsui/Aizen, Hitsugaya/Hinamori
pairings: Kakashi/Naruto, Naruto/Sasuke, Naruto/Sakura
pairings: Naruto/Sasuke, Kakashi/Iruka, Neji/Naruto
pairings: Sephiroth/Cloud
pairings: Roy/Ed
pairings: Gin/Izuru, Rabi/Allen, Cross/Komui, various DGM yaoi
pairings: Roy/Ed
pairings: Hitsugaya/Hinamori
pairings: Temari/Shikamaru
pairings: Jiraiya/Yondaime
pairings: Kiba/Shino
pairings: Roy/Riza
pairings: Roy/Riza
pairings: Hughes/Mustang, Havoc/Mustang
pairings: Hughes/Mustang
pairings: Renji/Hanatarou, Gin/Izuru, various
pairings: Naruto/Hinata, various/Hinata
GOOD ARTS
pairings: Roy/Riza
pairings: Jiraiya/Tsunade, Orochimaru/Tsunade
pairings: Kiba/Hinata, Neji/Hinata
pairings: Kakashi/Genma
pairings: Naruto/Sasuke
pairings: Chad/Orihime, Zangetsu/Ichigo
pairings: Ishida/Ichigo
pairings: Urahara/Ichigo, Ichigo/various
pairings: Shikamaru/Tayuya
pairings: Shikamaru/Ino
pairings: Kakashi/Sasuke, Sasuke/Sakura
pairings: Kakashi/Iruka
pairings: Shikamaru/Ino
pairings: Ichigo/Rukia
pairings: Sasuke/Sakura
pairings: Naruto/Sasuke
pairings: Lee/Tenten
pairings: Reno/Elena, various Reno het
pairings: Rabi/Kanda
pairings: Cross/Komui, Cross/Allen, Kanda/Allen
pairings: Cross/Allen, Rabi/Allen
pairings: Roy/Ed
pairings: Allen/Kanda, Rabi/Kanda
pairings: Sasuke/Naruto
pairings: Gin/Izuru
pairings: Kakashi/Sasuke
pairings: Hohenheim/Ed
pairings: Kakashi/Iruka
pairings: various
K-flower -- SO3 etc. Huge stash of SO3 hentai if you're into that sort of thing; some non-porn as well. A little hard to navigate, but the art can be quite good. Y, H
pairings: various
pairings: Allen/Kanda
pairings: Kira/Hinamori, Baki/Hayate, various
pairings: Kakashi/Iruka
pairings: Gaara/Temari
pairings: Kakashi/Sasuke
pairings: Sasuke/Naruto, Itachi/Naruto, various Naruto yaoi, various Akatsuki yaoi, various Jenova triplets/each other, various Jenova triplets/Cloud)
pairings: Kakashi/Naruto, Ed/Al
pairings: Roy/Riza, Roy/Riza/Havoc, Auron/Rikku
pairings: Roy/Riza
pairings: Roy/Riza
pairings: Roy/Riza
pairings: Sasuke/Ino, Kiba/Ino
pairings: Sasuke/Sakura, Ishida/Orihime
pairings: Komui/River, Komui/various
pairings: Hughes/Mustang, Havoc/Mustang
pairings: Kakashi/Iruka
pairings: Yoruichi/Soi Fong
pairings: Allen/Kanda
WORTH A LOOK
pairings: various het and yuri
pairings: tentacles/Hinata, tentacles/Yoruichi, tentacles/Rhode, various
pairings: Hughes/Mustang, Kakashi/Iruka
pairings: Hitsugaya/Hinamori
Slowcat -- Naruto etc. Some clean, well-drawn art. Definitely on the cutesy side. C
pairings: Ichigo/Rukia, Hitsugaya/Hinamori
pairings: Naruto/Hinata
pairings: Ed/Winry
MATERIAL
pairings: Kakashi/Iruka, various
pairings: Kakashi/Iruka, Genma/Hayate, various
Click here to continue to a list of the above sites organized in different ways.
This post is a work in progress and will be continuously updated as I find more sites and get into new fandoms.
Here are some things you should let me know about:
If you know of another site belonging to one of my fandoms that you think should be included
If I've forgotten to label a site that has material
If I've missed a pairing
If a link is broken
If I've categorized something wrong
Here are some comments I'll ignore:
Accusations of bad taste/poor judgment of quality
Complaints about my opinions on pairings
Enjoy!