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 (9301) rabbit (2902) same thing
eyes_closed (64506) closed_eyes (119209)
cyan_hair (16) aqua_hair (35683) Same thing, really
turquoise_hair (2) aqua_hair (35683)
ichigo_(k-on!) (0) wakaouji_ichigo (151) full character name
tewi (4) inaba_tewi (8353) Combine the tags
race_queen (1413) racequeen (87) removing the space
tagme_(artist) (288) artist_request (38154)
katekyo_hitman_reborn! (769) katekyo_hitman_reborn (853)
tie (818) necktie (96983)
kyuubee (1323) kyubey (6366)
sakuraba_milfeulle (1) milfeulle_sakuraba (452) The second is much more used.
defoko (1) utane_uta (106) fan nickname to official name
willaim (0) petticoat (2533) I love it.
cop (0) police (2144)
xmas (2) christmas (10179)
boobies (2) breasts (347273)
boobs (3) breasts (347273)
bunny_ears (18068) rabbit_ears (6493)
yamiko (85) 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 (170) Lordgenome is the official translation but alot of fans use Lord Genome
tengen_toppa_gurren-lagann (614) tengen_toppa_gurren_lagann (6575) Official spelling is gurren_lagann
blond_hair (267) blonde_hair (401024)
love_is_war (3) koi_wa_sensou_(vocaloid) (517) English name to Japanese name
cosmo_p (0) cosmo_(bousoup) (21) Artist's full username
spiked_hair (9626) spiky_hair (1485)
cloud (56432) clouds (6641) plural (many clounds on a picture)
moero!_justice_gakuen (66) project_justice (10) Japanese to English title
shiritsu_justice_gakuen (120) rival_schools:_united_by_fate (10) Japanese to English title
kemonomimi (288) animal_ears (156039) Japanese and English synonyms.
protoman (0) blues_(rockman) (86) US name=JPN name
toono_akiha (727) tohno_akiha (349)
blushing (61) blush (444357) The same thing, and blush is more common.
griffin (98) griffin (98)
soryu_asuka_langley (2365) souryuu_asuka_langley (5168)
ultimate_madoka (2810) goddess_madoka (830) same thing, latter is more popular
gryphon (8) griffin (98)
donut (31) doughnut (3196)
horo (87) holo (1194) official spelling
megaman (27) rockman (3042) 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) (1477) Official name given to the female protagonist in Pokémon Black 2 and White 2.
male_protagonist_(pokemon_bw2) (133) kyouhei_(pokemon) (496) Official name given to the male protagonist in Pokémon Black 2 and White 2.
double_buns (361) double_bun (22590) Same concept, one just has the plural.
laugh (119) laughing (3972) Same thing
hayate_no_gotoku (1) hayate_no_gotoku! (2446)
alicia_satsuki_mclean (0) alicia_satsuki_mcclane (1)