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 (9206) rabbit (2902) same thing
eyes_closed (62150) closed_eyes (119191)
cyan_hair (16) aqua_hair (35158) Same thing, really
turquoise_hair (2) aqua_hair (35158)
ichigo_(k-on!) (0) wakaouji_ichigo (151) full character name
tewi (4) inaba_tewi (8298) Combine the tags
race_queen (1388) racequeen (88) removing the space
tagme_(artist) (288) artist_request (37573)
katekyo_hitman_reborn! (644) katekyo_hitman_reborn (853)
tie (817) necktie (95370)
kyuubee (1323) kyubey (6355)
sakuraba_milfeulle (1) milfeulle_sakuraba (453) The second is much more used.
defoko (1) utane_uta (106) fan nickname to official name
willaim (0) petticoat (2497) I love it.
cop (0) police (2117)
xmas (2) christmas (10146)
boobies (2) breasts (337306)
boobs (3) breasts (337306)
bunny_ears (18068) rabbit_ears (6515)
yamiko (85) yamiya (71) http://www.pixiv.net/member.php?id=176223 artist's pixiv is やみや
big_boobies (0) big_breasts (169)
big_boobs (0) big_breasts (169)
lord_genome (12) lordgenome (167) Lordgenome is the official translation but alot of fans use Lord Genome
tengen_toppa_gurren-lagann (614) tengen_toppa_gurren_lagann (6556) Official spelling is gurren_lagann
blond_hair (265) blonde_hair (394883)
love_is_war (3) koi_wa_sensou_(vocaloid) (515) English name to Japanese name
cosmo_p (0) cosmo_(bousoup) (21) Artist's full username
spiked_hair (9440) spiky_hair (1476)
cloud (54586) clouds (6742) plural (many clounds on a picture)
moero!_justice_gakuen (66) project_justice (10) Japanese to English title
shiritsu_justice_gakuen (119) rival_schools:_united_by_fate (10) Japanese to English title
kemonomimi (287) animal_ears (153058) Japanese and English synonyms.
protoman (0) blues_(rockman) (86) US name=JPN name
toono_akiha (724) tohno_akiha (349)
blushing (60) blush (434831) The same thing, and blush is more common.
griffin (97) griffin (97)
soryu_asuka_langley (2341) souryuu_asuka_langley (5171)
ultimate_madoka (2805) goddess_madoka (830) same thing, latter is more popular
gryphon (8) griffin (97)
donut (31) doughnut (3156)
horo (87) holo (1188) official spelling
megaman (27) rockman (2973) 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) (1470) Official name given to the female protagonist in Pokémon Black 2 and White 2.
male_protagonist_(pokemon_bw2) (133) kyouhei_(pokemon) (495) Official name given to the male protagonist in Pokémon Black 2 and White 2.
double_buns (361) double_bun (22214) Same concept, one just has the plural.
laugh (119) laughing (3906) Same thing
hayate_no_gotoku (1) hayate_no_gotoku! (2445) …
alicia_satsuki_mclean (0) alicia_satsuki_mcclane (1)