On Snapchat she's hitomi0718.
On Twitcast she's 'Hitomi official' @Hitomi_official. On Instagram she's official_hitomitanaka (there are a couple of back-up accounts as well but that needn't preoccupy us here). A friend and great follower who posts some good stuff is oppai_lover69. On Twitter she's Hitomi official @Hitomi_official and, again, Oppai_Lover69 (@Oppai_Lover69) is an active correspondent who posts some very nice stuff. You can also check out Hitomi0718 (@Hitomi0718) who is another friend who posts good stuff. There's others, too numerous to mention. Suffice it to say, Hitomi is pretty popular.