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 (10330) rabbit (2913) same thing
eyes_closed (83328) closed_eyes (119141)
cyan_hair (16) aqua_hair (37808) Same thing, really
turquoise_hair (4) aqua_hair (37808)
ichigo_(k-on!) (0) wakaouji_ichigo (151) full character name
tewi (4) inaba_tewi (8711) Combine the tags
race_queen (1487) racequeen (75) removing the space
tagme_(artist) (288) artist_request (41531)
katekyo_hitman_reborn! (863) katekyo_hitman_reborn (853)
tie (836) necktie (109353)
kyuubee (1323) kyubey (6444)
sakuraba_milfeulle (1) milfeulle_sakuraba (455) The second is much more used.
defoko (1) utane_uta (107) fan nickname to official name
willaim (0) petticoat (3244) I love it.
cop (0) police (2358)
xmas (2) christmas (11347)
boobies (2) breasts (420549)
boobs (4) breasts (420549)
bunny_ears (18064) rabbit_ears (6319)
yamiko (89) 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 (174) Lordgenome is the official translation but alot of fans use Lord Genome
tengen_toppa_gurren-lagann (614) tengen_toppa_gurren_lagann (6651) Official spelling is gurren_lagann
blond_hair (270) blonde_hair (443703)
love_is_war (3) koi_wa_sensou_(vocaloid) (522) English name to Japanese name
cosmo_p (0) cosmo_(bousoup) (24) Artist's full username
spiked_hair (11171) spiky_hair (1486)
cloud (64981) clouds (6432) plural (many clounds on a picture)
moero!_justice_gakuen (67) project_justice (10) Japanese to English title
shiritsu_justice_gakuen (123) rival_schools:_united_by_fate (9) Japanese to English title
kemonomimi (289) animal_ears (184270) Japanese and English synonyms.
protoman (0) blues_(rockman) (92) US name=JPN name
toono_akiha (743) tohno_akiha (349)
blushing (63) blush (522757) The same thing, and blush is more common.
griffin (116) griffin (116)
soryu_asuka_langley (2525) souryuu_asuka_langley (5160)
ultimate_madoka (2853) goddess_madoka (829) same thing, latter is more popular
gryphon (8) griffin (116)
donut (34) doughnut (3524)
horo (87) holo (1352) official spelling
megaman (28) rockman (3444) 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) (1519) Official name given to the female protagonist in Pokémon Black 2 and White 2.
male_protagonist_(pokemon_bw2) (133) kyouhei_(pokemon) (502) Official name given to the male protagonist in Pokémon Black 2 and White 2.
double_buns (361) double_bun (25429) Same concept, one just has the plural.
laugh (120) laughing (4390) Same thing
hayate_no_gotoku (1) hayate_no_gotoku! (2447) …
alicia_satsuki_mclean (0) alicia_satsuki_mcclane (1)