You can suggest a new alias, but they must be approved by an administrator before they are activated.
An example of how to use this: (Neon_Genesis_Evangelion is the tag and Evangelion is the alias. Evangelion -> Neon_Genesis_Evangelion)


Alias To Reason
bunny (10117) rabbit (2912) same thing
eyes_closed (78548) closed_eyes (119109)
cyan_hair (16) aqua_hair (37310) Same thing, really
turquoise_hair (4) aqua_hair (37310)
ichigo_(k-on!) (0) wakaouji_ichigo (151) full character name
tewi (4) inaba_tewi (8661) Combine the tags
race_queen (1471) racequeen (76) removing the space
tagme_(artist) (288) artist_request (40739)
katekyo_hitman_reborn! (860) katekyo_hitman_reborn (853)
tie (830) necktie (105967)
kyuubee (1323) kyubey (6418)
sakuraba_milfeulle (1) milfeulle_sakuraba (454) The second is much more used.
defoko (1) utane_uta (107) fan nickname to official name
willaim (0) petticoat (3035) I love it.
cop (0) police (2291)
xmas (2) christmas (11280)
boobies (2) breasts (400811)
boobs (3) breasts (400811)
bunny_ears (18065) rabbit_ears (6324)
yamiko (86) yamiya (71) http://www.pixiv.net/member.php?id=176223 artist's pixiv is やみや
big_boobies (0) big_breasts (171)
big_boobs (0) big_breasts (171)
lord_genome (12) lordgenome (173) Lordgenome is the official translation but alot of fans use Lord Genome
tengen_toppa_gurren-lagann (614) tengen_toppa_gurren_lagann (6637) Official spelling is gurren_lagann
blond_hair (270) blonde_hair (433296)
love_is_war (3) koi_wa_sensou_(vocaloid) (521) English name to Japanese name
cosmo_p (0) cosmo_(bousoup) (24) Artist's full username
spiked_hair (10664) spiky_hair (1484)
cloud (62539) clouds (6433) plural (many clounds on a picture)
moero!_justice_gakuen (66) project_justice (10) Japanese to English title
shiritsu_justice_gakuen (122) rival_schools:_united_by_fate (9) Japanese to English title
kemonomimi (289) animal_ears (177256) Japanese and English synonyms.
protoman (0) blues_(rockman) (92) US name=JPN name
toono_akiha (739) tohno_akiha (349)
blushing (62) blush (502377) The same thing, and blush is more common.
griffin (111) griffin (111)
soryu_asuka_langley (2483) souryuu_asuka_langley (5171)
ultimate_madoka (2840) goddess_madoka (829) same thing, latter is more popular
gryphon (8) griffin (111)
donut (34) doughnut (3429)
horo (87) holo (1344) official spelling
megaman (27) rockman (3296) USA ver.--->Jpn ver.
megaman_(series) (0) rockman_(series) (1) USA ver. --> Jpn ver.
fatal_frame_iv (0) fatal_frame_4 (220) Roman Numerals
female_protagonist_(pokemon_bw2) (262) mei_(pokemon) (1500) Official name given to the female protagonist in Pokémon Black 2 and White 2.
male_protagonist_(pokemon_bw2) (133) kyouhei_(pokemon) (500) Official name given to the male protagonist in Pokémon Black 2 and White 2.
double_buns (361) double_bun (24648) Same concept, one just has the plural.
laugh (120) laughing (4311) Same thing
hayate_no_gotoku (1) hayate_no_gotoku! (2447)
alicia_satsuki_mclean (0) alicia_satsuki_mcclane (1)