
Even as more and more people complain about how unsocial social network services have become, some Japanese Twitter users have put their faith in humanity and opened up a new line of communication with their fellow Tweeters.
How? By publicly posting their phone numbers, some going as far as posting their bank account information and address.
In one of the biggest WTF moments on Twitter ever, some Twitter users have taken to posting their real, actual, no-lie phone numbers on Twitter. While many might view this as an invitation to mischief at best and outright identify theft at worst, the “phone number revealing festival,” as it’s been dubbed, is ostensibly an attempt at encouraging communication. Started by Twitter user Kazuma Ieiri, a serial entrepreneur, the idea is simply to allow anyone to contact their fellow netizens easily and directly.
While most people are still fretting about their online security, Kazuma Ieiri seems only interested in communicating with new people. In a post to his Facebook page, the widely-followed Twitter user explained that he was more interested in have compelling conversations with new people than worrying about risk. It seems that the entrepreneur has also posted his address and bank account number online as well, saying, “I look forward to having some great encounters.”
▼ Kazuma Ieiri’s Twitter page, with address, phone number and bank account information.
Obviously, this sort of bold move isn’t for everyone, and Kazuma Ieiri himself insists that if it makes you feel uncomfortable then you shouldn’t do it. Another point of concern is that once your number is “out in the wild,” as it were, you have pretty much no chance of getting it back. Even if you remove it from your Twitter account, it will likely still remain in a Google search cache—or in the address books of anyone who snagged it.
Still, there aren’t any horrible experiences to report yet. One Twitter user even tweeted a message thanking Kazuma Ieiri, ecstatic that she was able to connect with another user. While chatting on the phone, she learned that the other person lived in the same area and was overwhelmed by their conversation. The Twitter user even ended the message by asking Kazuma Ieiri to be the MC at her wedding if she got married.
The general reaction from Twitter users was, as you might expect, quite varied:
This is so cool! With people revealing their phone numbers, you can call and talk to lots of different people.
This kind of experience is definitely not something you can get under normal circumstances.
Someone called me! Amazing! It was much more entertaining than I expected!
I posted my phone number. It’s so exciting!
Ieiri’s phone-number-revealing festival is so amazing…in so many different ways.
I woke up to find my time line filled with people’s phone numbers.
There’s been so many phone numbers revealed that I don’t know who to call. So, someone, I don’t care who, call me!!
What the…this is popular now? Isn’t it scary??
This revealing phone numbers looks interesting and I want to try talking with lots of different people. I’m late, but I’m gonna try it out!
So, this is, indeed, happening. While it may not be the best idea in the world, there is something to be said for taking chances. If you feel inspired to join the festivities, we urge you to at least consider the full implications of your actions first. On the other hand, it’s probably not particularly difficult to find anyone’s phone number with a little digging.
Who knows, maybe this will usher in a new era of social networking! Or maybe it’ll be a brief fad that disappears in a few days—though obviously the phone numbers will still be floating around in the vast untamed wilderness of the Internet. At any rate, we think we’ll sit this one out…unless Mr. Sato is feeling brave.
Source: Facebook, Twitter, Byoukan Sunday

Major Japanese news site won’t let anyone post comments without providing a phone number
Make your business memorable with a license plate phone number
Japanese woman shares horrifying experience of having her phone number exposed on the Internet
“Unforgivable” Post-Earthquake Twitter Prank Causes Outrage Online **UPDATED**
Newly appointed Minister of the Environment found following adult-oriented Twitter accounts
Japanese convenience store Lawson launches new “mini supermarket” chain, L Minimart
Japan’s adorable pudding chick becomes a transit card mascot
Pikachu cakes and other adorable Pokémon 30th anniversary food coming to Tokyo luxury hotel
Gigantic gacha machine appears in Tokyo department store for capsule toy celebration
Starbucks Japan releases a new limited-edition Frappuccino inspired by espresso affogato
Sushi Pizza surprises diners in one of the best food destinations in Japan
The Japan Burger Championship 2026 in Yokohama next month is the ultimate battle of the beef
133-year-old Japanese company’s cookies go beyond matcha with dashi and shichimi flavors
Japan’s real-world Pokémon hot spring’s first photos are here![Photos]
Studio Ghibli still doesn’t allow its anime to be streamed online in Japan, and here’s why
Tokyo’s new extra-expensive ramen restaurant is dividing opinions, so we tried a bowl
Gundam teams up with 300-year-old daruma maker for wood-carved anime mecha figures[Photos]
Japan’s instant ramen snack theme park features an athletic course even adults can enjoy
Pizza Hut Japan’s drinkable curry pizza is here – Is it all we dreamed it would be?[Taste test]
Krispy Kreme releases new limited-edition fox doughnuts at only four stores in Japan
Japanese temple burns to the ground, fire burning inside for 1,200 years unharmed
Mr. Sato takes a walk on Tokyo’s American-style street to get some American/Japanese ice cream
Two new Sailor Moon art manhole covers are coming to Usagi’s real-world Tokyo neighborhood
Tokyo’s life-size Gundam anime mecha statue will be removed this summer
The average age of Japan’s hikikomori shut-ins is getting older, survey shows
Japan enters Golden Week vacation period, survey shows one in three plan to ride it out at home
Ichiraku Ramen-inspired ramen sets from Naruto anime pay homage to Naruto, Sasuke, and Sakura
Kanji ice cream becomes a sell-out hit in Japan
Japan’s new Pokémon jackets give you the look and powers of the Kanto starter trio
Japan now has gyoza doughnuts, and they taste like no other doughnut we’ve tried before
Studio Ghibli releases new anime keychains that are like miniature figurines
Japan has a new cute and clever sunblock for cat lovers
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
Japan’s new ATMs automatically play anti-fraud videos to people talking on mobile phones【Video】
Hyogo man arrested for stalking woman through her bank account
Kyoto Animation releases details on official donation bank account for overseas, Japanese donors
“Hey, how’d you get our personal information?” we ask a Japanese telemarketer
Japanese service will lock your social media accounts and boost your productivity
Japan Post provides sample letters for marriage proposals and other personal messages
SoftBank buying Facebook ‘likes’, hints at possible new job opportunities!
8 kinds of photos that Japanese girls always post on Twitter
Japanese Netizens Mistake Mobile Giant SoftBank’s Proud Announcement for April Fools’ Joke
Net users take issue with mobile phone game’s graphics being “moe-fied” for Japanese release
Woman accidentally tweets new iTunes card codes, the obvious happens
The Bank of Japan is really jazzed up about the new 10,000 yen bill
Japan’s number-one cosplayer Enako sparks heated debate after revealing insane 2020 income
SoftBank prohibits intercourse with its robot Pepper
Journalism at its worst? Mt. Ontake hiker pestered for information on Twitter